I've owned a Polycraft 4.55m. You can plastic weld wider spray chines on them. This helps to displace the spray you would normally get. They are a heavier boat, 310kg for the 4.55 without outboard, but they are a soft ride and you don't need to worry about getting pounded as much as a tinny, and you don't have to worry about electrolysis or soft fibreglass.
Cheers
Deek