My 20' Seafari had a Merc XR4 150, at 370lbs, and would self-bail with no one on the boat. Step on board, and water came up on the deck. Currently has a Merc Opti 90 hp at 375 lbs, ditto. I have drain plugs in the deck drains which I remove once underway, and replace before coming to rest. Unless I'm alone, in which case my shoes just get wet.
At rest, drains open, with me standing in front of the motor well, I have about 1/2" to 3/4" of water on the deck.
FTR, when I had twin V6 150 Johnson motors on the marina's '77 23' CC in 1983, it sat with about 3-4" of water on the deck.
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Common Sense is learning from your mistakes. Wisdom is learning from the other guy's mistakes.
Fr. Frank says:
Jesus liked fishing, too. He even walked on water to get to the boat!
Currently without a SeaCraft 
(2) Pompano 12' fishing kayaks
'73 Cobia 18' prototype "Casting Skiff", 70hp Mercury