For cold water and cold weather, and keeping your feet warm, the $229 dry suit from
www.mythicdrysuits.com in Maine encloses the feet so you wear a quality pair of Speedo water shoes over the dry suit feet that fit good and stay on.
If you get dumped while doing donuts or something, having a dry suit, water shoes that stay on, a quality pfd, and using the shut-off lanyard is a good thing.
These dry suits are one piece, whole body, with openings for the head and two hands, while enclosing the feet like pajama footsies.
Also, helps a lot to wear non-cotton long underwear under the dry suit for staying warm, jet-skiing, in November, December, and April, with air temps below 40.