Use some gold to pay for a dry suit.... im in Fl and still feel like im freezing my butt off after 6 to 8 hours in the water in a 5 mm shortie. Now Joe..... about peeing in a dry suit? Cold water and ole men ya know.....
I'm new to treasure hunting, but know a little about SCUBA, and drysuits. Enough to say don't pee in one...
However, just in case you're serious, dry suit accessory makers do offer 'pee valves'. When you put the suit on you have to put a catheter on your... self. The catheter has a tube that connects to a one-way valve in the suit.
Yes, really. Look it up.
However, notice I'm talking about SCUBA drysuits. I don't know much about non-diving drysuits like used by kayakers and others. They may have other options.
WRT the SI Tech gloves posted above, there are two general types of gloves used by drysuit divers. Some drysuits have wrist seals, and are used with regular 'wet' neoprene gloves. The ones pictured above are 'dry' type, and warmer. However, for treasure hunting I would think you would want neoprene gloves for the increased dexterity. The dry gloves are loose-fitting to be worn over cotton or fleece liner gloves.
For the budget-minded, there is a DIY approach to the dry gloves. More info on request.
And for the OP: There are basically two types of drysuits, shell suits and neoprene suits. Neoprene suits have built-in insulation (the neoprene), whereas a shell suit is basically just a thin nylon coverall to keep your insulating garments dry. I would think you would want to look at shell suits, since you have greater control over the insulation (vary the undergarments to suit the season). Plus a neoprene suit is almost always black, and they get really warm in the sun. Working in the surf zone it seems you would have more trouble with your torso sweating while your hands and feet are freezing.
Oh, and WRT the original question, I would also advise looking into a drysuit. I have a heavy neoprene farmer john and jacket that I use for cold-water diving. While it can be warm enough, and avoids issues of drysuit diving, it is really restrictive. That's OK with recreational diving where you don't do much with your hands anyway, but for this hobby, I think a drysuit would be the way to go.