Kankama said..
The thing that irks me about my inflatable lifejacket is that rowing is a pain. It catches on the oars readily. It also makes clambering into a dinghy harder.A dinghy style pfd is probably the best idea, I sail my Laser in one with no issues and can clamber pretty well in it.
Still, if I hit my head then nothing will help.
+ 1 for Hobie Kayak PFD = easy rowing - buckles/zip,and open at the back ,with few loose bits to catch on- had them for years,and fits like snug vest,