Drysuit. You can put on your 7mil Michelin Man outfit and tough it out for the first dive, but the surface interval is a killer and the second dive is just no fun. We're (mostly) not pros here, having fun is the whole point. The pros dive dry too. If you felt squeezed you were doing it wrong: there's a button on your chest that fixes that problem. That button creates other problems, that's why you take the course. I haven't seen anyone dive wet on the PNW for several years now, it's gone totally out of fashion.