If your getting a 16' sled I wouldn't go with any thing less than a 90h.p.=60h.p. jet.
I would lean towards a 115h.p.=90h.p. jet if it's legal,meeting coast gaurd standards.Like
it was mentioned above don't go cheap on the power source or you'll be sorry.While your at it,get a four stroke kicker for it.Good luck,
STRIKE ZONE