Inflatable PFD vs. Foam

[Kelroy]

Like MOPanfisher, I have had occupational exposure to the inflatables for many years. We also test and rearm ours every year. Manual-only is not allowed on my job. We did have the dissolving-pill (bobbin) with manual backup, but switched to the pressure-sensor type when they became available. Either style will inflate when you accidentally snag the pull cord on something. The bobbin style will deploy unintentionally if you get them close enough to water (such as with chest waders), and any time they are exposed to prolonged or acute dampness (rain, fog, being stored in a container along with wet waders etc). The pill itself is shaped like a donut, with a spring-loaded firing pin through the middle; as the pill dissolves the pin is released. The pill material is a chalky compressed powder, and repeated exposure to high humidity environments  will degrade them over time, so they must be inspected periodically.  It is also vulnerable to fracturing from impact.

The pressure-sensor type is far more stable. Our in-pool tests show it takes a couple of seconds and/or a foot of water to make them deploy. If you go for a dive, you will be under for a couple seconds before you pop back up. 

Inflatables are great for most boating applications, but if you are one of those guys who likes to blast around at 60-70 mph, be warned that most are not speed-rated; in a hard impact with the water they might peel off right over your head.

If you are concerned with the possibility of entering the water in an unconscious manner, the inflatables will positively roll you over into a face-up floating posture. Few foam vests will do that,  since they are designed with more floatation material in the back than in the front. Typical fishing/ski vests are great for keeping you afloat, but many will roll an unconscious user into a face-down position. 

 

[MOPanfisher]

Great information sir.

[slothman]

Thank you all for your input. I think you have helped me decide to stick with what I know works for me and go with the traditional uninflatable PFDs. I know they work...every time. I know I am going to wear it when running down the lake. And, they are less expensive.