Having been surfing for years and fishing last year in a surf suit I have always been happy to drink lots of water and pee freely in my suit. However I have now ordered a tailor made spearfishing suit and I don't fancy peeing in something that fits so snugly. I have seen other threads about p-valves and pissettes but the former looks too complex and the latter too embarassing by far. Scuba divers have convenience zips on their drysuits - could one be fitted to a wetsuit?