I have a drysuit. I got a low priced drysuit in November from
www.mythicdrysuits.com which are made in Rockport, Maine for paddling a sup paddle board on water below 60-degrees or so. It is a very well made, quality drysuit, and I have used it with just a bathing suit, and with long underwear, used with a Mae West style inflatable pfd. It works good to increase personal safety for paddle boarding.
Think I'll stick with surface diving with a mask, snorkel, and fins and let others enjoy the scuba depths. In Lake Winnipesaukee there's nothing down there but a lot of rocks, and no big sunshine water view. I kinda like that sunshine and a drysuit definitely keeps you from getting sunburned, plus it gets used for sailing too.