Join Date: Jul 2007
Location: Truckee, CA
Thanked 116 Times in 114 Posts
Rep Power: 9
Re: How Low Can We Go? (hp)
A lot has to do with how rough & currents you have to buck. We had a Coronado 25, similar to your size boat, about 5,000 lbs loaded, with a good well arrangement that allowed us to tilt the motor all the way up out of the water We had a 6HP 2 stroke which was OK in calm water but struggled in the heavy chop both inside & outside of San Francisco Bay.
We went to a 15HP 2 stroke, which was the same size & weight as the 9.9HP, which probably been enough power, both the 6HP & 15HP were equipped with lower than standard props. Seldom did we use all the power the 15HP put out.
I have seen many boats in the Bay with transom mounted motors screaming their guts out when it got rough, plus the weight is higher and further aft. If the structural integrity of the hull would tolerate cutting an opening to allow the motor to tip up, that would seem to be a good option. I have seen Coronado's with the opening enlarged to accommodate larger, size wise, motors.
The only downside may be the boat has been somewhat "modified" a possible consideration at re-sale time. Removing the motor after each use sounds like a big pain, regardless of size.
Last edited by dabnis; 05-10-2014 at 04:07 PM.