Foam, inflatable or float coat on a cold-water walleye boat

This is a research-based guide, not a test. Michigan Hunt and Fish tested no life jacket, has no sponsors and carries no affiliate links. The case is an adult in an open boat in November, fishing walleye on waters the 2026 Michigan Fishing Regulations (in force April 1, 2026 to March 31, 2027, pages 12 and 13) list as open all year, among them Lake St. Clair, the Detroit River, Lake Erie and Saginaw Bay.

The categories are the three kinds of wearable a boater meets: foam vests, inflatables and float coats. The criteria are USCG approval, the label’s word on turning an unconscious wearer face up, the condition it requires, re-arming, and thermal protection. There are no star ratings and no pick. No independent cold-water test of inflatables against foam turned up, and none of the tests below states a water temperature.

The law aboard, and the label

On Michigan waters, the DNR’s life jacket rules page and the 2026 Handbook of Michigan Boating Laws and Responsibilities (both read Oct. 30, 2026) require at least one USCG-approved wearable life jacket for each person on a boat 16 feet or longer, plus one USCG-approved throwable device. For a boat under 16 feet they allow either a wearable or a throwable for each person, but the Fishing Regulations (page 33) say the Coast Guard requires a wearable for each person on the Great Lakes and connecting waterways. On a boat under 16 feet, a wearable for each person meets every reading. A child under six must wear a Coast Guard-approved Type I or Type II jacket on the open deck of a boat underway. Jackets must be in good and serviceable condition, readily accessible, and sized by body weight and chest size; the DNR page bars inflatables on a personal watercraft or while towed. The Coast Guard Boating Safety Division’s life jacket page (last modified October 2026, read Oct. 30, 2026) says a jacket should be worn at all times when the vessel is underway, though not always required by law.

The handbook says a jacket must carry a USCG approval number and be used as its label directs. New-style labels give a performance level, typically 50 to 150; lower numbers suit near-shore, calm water and “will not turn most unconscious persons face up.” A turn-ability icon says whether a jacket will. For inflatables, the Michigan documents read give no age or wear rule beyond the label. The Coast Guard page says they are often approved only when worn and are not appropriate for weak or non-swimmers, and that without a full cylinder and all-green status indicators the device “is NOT serviceable, and does NOT satisfy the requirement to carry lifejackets.” Its undated brochure “How to Choose the Right Life Jacket” (read Oct. 30, 2026) adds “Not for children under 16 or non-swimmers”; the web page prints no age for inflatables, only “Sizes only for adults.”

What the cold-water bodies say about gear

The National Weather Service’s page “Cold Water Hazards and Safety” (read Oct. 30, 2026) says wearing a life jacket “significantly increases chances of survival,” and that cold shock “can be just as severe and dangerous from water temperatures of 50-60°F (10-15°C) as it is from water at 35°F (2°C).”

The National Center for Cold Water Safety (NCCWS), a nonprofit writing largely for paddlers, says on its “What PFDs Can and Can’t Do” page (read Oct. 30, 2026) that a life jacket can keep an incapacitated person afloat but cannot prevent cold shock, incapacitation or hypothermia. On its “Always Wear Your PFD” page it says inflatables give more buoyancy than a Type III foam vest but can fail to inflate, and calls a manual model a bad choice for cold water immersion. It calls the makers’ claim that float coats “delay hypothermia” misleading and places them above no insulation but below a wetsuit or drysuit. The Coast Guard brochure says a hunting float coat “May help prevent hypothermia” and “May not turn unconscious wearer face up.” The NCCWS calls the 1-10-1 formula a myth; this piece does not rely on it. After a fall, see the walleye, perch and muskie guide in this issue; for a breakwall, the Presque Isle story in this issue.

The published tests, with their conditions

Each result is the named tester’s, on its models and conditions. Only one test devoted to float coats (Practical Sailor, 2007) and one of hydrostatic inflators (BoatingLAB, 2012) turned up. The test figures and dates are as the named pages read on Oct. 30 and again on Oct. 31, 2026.

• BoatUS Foundation, Findings 30, May 1998 (one BoatUS page carries both Findings 30 and 50; read Oct. 30, 2026): seven manual inflatables, among them the Stearns 1131 and Mustang AirForce, against a Type I control in a hotel pool and a wave pool with seas to four feet; inflatables turned the tester face up in 4.5 seconds on average against 6 for a Type I. Foam Type III vests, with a simulated unconscious victim, “repeatedly sank well beneath the surface” (BoatUS Foundation findings as quoted by the National Center for Cold Water Safety). Limits: manual models only, a tiny sample, no water temperature.
• BoatUS Foundation, Findings 50, May 2011 (same page), indoor pool in winter: the Spinlock Deck Vest 150N, Baltic Winner 150N and Mustang Auto Deluxe turned testers face up once deployed but were “difficult to swim in”; only the Mustang of the three inflatables was USCG approved. BoatUS wrote of the Stearns Float Coat that “the loose fit was somewhat problematic when attempting to swim in the jacket.”
• Boating magazine’s BoatingLAB (Randy Vance, updated Feb. 1, 2012), dunk, snag and shower tests: hydrostatic units (Mustang HIT MD3184, West Marine MD3183) surfaced faster than dissolving-trigger jackets, and none of the hydrostatic units activated in the five-minute shower and five-gallon douse test. Faults reported: snags on the Spinlock, SOSpenders and Revere jackets, and slower re-arming of hydrostatics. Limits: no water temperature, 2012 models.
• Practical Sailor (2008, updated March 2, 2020), ten inflatables in a canal jump and spray test: the Float-Tech vest inflated in the spray test, and the Mustang MD0450’s wings did not auto-deploy; a Mustang spokesman told the magazine “there may be some circumstances where they do not deploy or bust out of the zipper on their own. This can be due to colder weather, water conditions, etc.”
• Practical Sailor, “Float Coats Tested” (Jan. 18, 2007), no temperature stated: foam garments protect better from the cold water than inflatable ones. Faults reported: skirts floating up on the Windward and Classic MC1504, mildew stains.
• Practical Sailor (June 25, 2019): its author, Darrell Nicholson, writes that “we carried out a test” at the Naval Academy, in which over 10 percent of 30 randomly selected inflatables failed to auto inflate three months later, with no report cited; the article also relays, not read at the source, a 2014 RNLI survey in which 8.7 percent of 6,752 jackets would not have worked.
• A 2016 Lifesaving Resources case study (G. Dworkin) describes an adult man drowning when an unnamed automatic jacket failed in water given as 50 degrees Fahrenheit. It is one incident, not a test.

Not found: an independent cold-water comparison of manual, automatic and hydrostatic inflatables with foam; a test of whether an inflator fires on an unconscious wearer in cold-weather clothing; an independent immersion test of current float coats.

Maker claims and prices, read Oct. 30 and Oct. 31, 2026

The listings below are the makers’ or retailers’ claims, not independent findings. The specifications and prices are as the listed pages read on Oct. 30 and again on Oct. 31, 2026, and a retailer’s price changes.

The DNR documents require a USCG approval number, so the MS195HX as listed would not settle carriage on a Michigan boat. The Onyx A/M-24 re-arm kit (K320) was $29.99 at Tackle Warehouse, “In Stock: 14 Days,” read Oct. 31, 2026.

The next decision is the label on the jacket you would wear: approval number, turn-ability icon, any wear-only condition and, for an inflatable, a full cylinder and green indicators. The DNR’s life jacket rules page is the one to check again.