The cockpit hatch was a timely and vastly worthwhile improvement! I cannot imagine trying to work on the innards below the cockpit without it. If you're thinking about installing one and wondering if it'll be worth it - JUST DO IT!

I can't speak for the water tightness yet, since I have improperly non-bedded hardware all over the deck and coach roof which is undoubtedly the primary source of my water intrusion...