I have a lung disease, and get winded easily, probably couldn't swim very far at all without giving out of breath. I have been in the habit of wearing a life vest (and using a kill switch) for many years, but with my lung condition, I have made a habit of wearing my vest at all times when I'm alone, except sometimes when anchored in calm waters, and even then I keep one within easy reach (they likely would not be much use stored in a compartment). The vests can be hot and uncomfortable at times, and even a good one is bulkier than I like, especially in cold weather when I wear heavier clothing. I have a float jacket, but on really cold days, it feels too stiff for me, other than when underway. I've been considering buying one of the inflatable preservers, but don't know which one is better for me. I have a friend who had to use one when their bass boat flipped in a storm on Lake Moultrie a couple of years back, and although it inflated, it actually restricted arm movement to the point that he couldn't swim back to the boat, and was drifting away. Fortunately his fishing partner swam to him and tied a rope to keep both of them with the boat until another boat spotted them and came to their aid. Of course I don't want to end up in this predicament, and I don't know what kind he was wearing. My question is: what experience or knowledge do some of you have on these life preservers that might help me decide?