[eggsuckindog]

Frankly with all the other stuff and a good transom I would leave that until later. I have a MA with a 20" transom and a 200 merc @ 410lbs. My PO has put 2 5" starboard splash guards either side of the engine and I have only once gotten water over the transom. I also have a factory door that mounts across the splashwell to keep any water in the splashwell as it has 2 1" drains back there - that was the original design. If you look you will see the 1" recess built into the the front of the splashwell that you could easily build a 2 piece hinged door - frankly I have put mine on twice and wished I hadn't bothered.

The original SeaCrafts were offshore boats but with 20" transoms a door across the splashwell was always there - my 18 had one and even the 23 with the large splashwell still had a hinged door. If a wave comes in it goes right back out the scuppers and never enters the cockpit, the 18 fishing West Palm with 3 guys the system worked just fine when getting fish on board with everybody near the stern you'd get waves back there. Those spalsh guards do work well I must say, the boat was used on the east coast but they work great grouper fishing in the gulf too - never put the door on.

Note- There is a bilge access panel back there that MUST be sealed well - only place water can get into the bilge and the cause of most sinkings.