Too much weight? Any recomendations

[Bushwacker]

Even a 200 is more than enough for a 20' SeaCraft, especially if you run intend to run offshore very much. It's a relatively light hull and tends to go airborne at speeds over 20 kts in seas over 3'. Adding more power that you can't use only adds excess weight to the transom and screws up the CG, raising min planing speed up to around 20 kts and hurting the ride.

I think the hull was originally rated for 170 hp and is much more efficient than most modern hulls, so it will plane at 10-12 mph and performs well with lightweight motors as small as 85-90 hp. I ran mine for over 30 years with a 300 lb V-4 that was about 100 hp at the prop and it was better balanced then than it is now with a 420 lb motor on a bracket. I had to go to a stern lifting 4B prop and a Doelfin on the new motor to get the min planing speed down to 12 mph where it was with the old motor! I think the optimum motor for the 20' hull for offshore use is about 130-150 hp and weighs no more than about 375 lbs!