VHF radio? (other safety gear you take?)

[FISH11]

As already mentioned a Kayak fishing PFD (has a recessed back padding for comfort), a waterproof floating VHF radio w/GPS (if you can afford the extra feature), a safety whistle, a waterproof light, and a flag on a pole (such as a Yakattack visipole) preferably with built in light, for safety when it get foggy, a self rescue step ( for getting back in if you fall overboard and are alone) can be bought or make your own.