got a good PFD from REI when getting the kayak redy for fishing. had it adjusted in the store, all tight and so on. went fishing and found it supportive of my upper back--a plus fishing in a little boat. however i felt i was still not safe and hired an expert to teach me how to fall out of and get back into the 'yak. best money i ever spent 'cause it was far harder than i ever thought it would be. turns out the PFD floats me high enough to make a big difference. lets me fetch out the gear and rig it up for re-entry. expert pointed out that an inflatable would not allow me to work next the boat to rig the "get-back-in-er". now i know for sure that i can get back in, pump out and go wetly on my way...priceless!