They are called Deck Plates
Joe from Ohio, They are called deck plates and West Marine sells them for about $18.00. I'm not sure where Walter bought his deck plate, but it was probably West Marine or Boat US before they got bought out by WM. Walter borrowed a large hole cutting saw and a single speed electric drill from his son in-law to cut the hole for the deck plate. I wish I'd have known that the drill only had a single speed, because I'd have let Walter use my variable speed 1/2" drill. You see;--If you try to cut the hole in the Fiberglass with a single speed drill, it could screw up the hole, so you need to run the drill in reverse. I think that this makes more dust than if you ran a variable speed drill forward and slow. Anyway Joe, I have a link to the deck plates in the West Marine catalog. Check it out. I think that it's a good way to go. I'm going to need to replace my self bailing hose, and it's a bear to get at. Not only that, but I'm afraid I'll get stuck inside that cockpit hatch trying to get at it.