Unless you hit a real harsh wave and the carbon seal moves a little to let water in, there should be no water entering the hull at all.
You could have a leak in the rubber exhaust couplers or one of the cooling hoses.
The scuppers can also allow water in from the back if they’re worn out. But you’ll see that water enter at your feet first.
The plugs in the stern could allow water in if the gaskets are bad.
Other that that these boats don’t take on water. The engine bay should be almost dry. Maybe a very little water, like maybe a half cup in total.
Drain everything and dry it out with towels. Then get it in the water and check for leaks and correct them first.