My favorite PFD while kayak fishing is the automatic fill West Marine PFD. Even though it is expensive, it is worth it. Unlike regular PDFs, It is very easy to move around in the West Marine PDF and if you happen to fall into the water the vest automatically inflates.
Here's a link:
https://www.google.com/shopping/product/11728852783494440776?lsf=seller:2709845,store:1415114474856317928&prds=oid:10718018036823382615&q=inflatable+pfd&hl=en-US&ei=9kPnWajrLsOXmwHD2LDgCg&lsft=gclid:Cj0KCQjw95vPBRDVARIsAKvPd3J189TCG9-cWjkhx1cwwsz4Vv95hyYHr0SWgXfLrB-LJXG3cqJKPUwaAm88EALw_wcB
