Re: 100hp on a 20 sf?
Some would say you'll be underpowered, but you'll be fine. If you're satisfied with your Sea Ox numbers you'll be happy with that motor on the SeaCraft 20. Move everything forward like you mentioned and make sure the prop has some stern lifting qualities. Probably top out at 33mph and get excellent economy at low 20s mph cruise. Get some trim tabs or at least an SE foil to get on plane quicker.
I have a Seafari 20 with an '83 115 Merc and get 36 mph WOT and get out of the hole very quickly.
__________________
there's no such thing as normal anymore...
|