Originally Posted by howy33
I have a 2017 West marine
9.6 dbl floor aluminum
hypalon with a 9.9 Merc 4 stroke
w/fins(added) fully inflated tubes. I am at my wits end trying to get it up on plane with 2 people. By myself and gear=300lbs no prob 5800rpm 17mph. 2 people and gear=450lbs hanging over the bow 4000rpm 6mph no plane. I am getting ready to purchase
my fourth prop. Currently on a 4 blade 8.9x7 Anita, going to 8.9x5 Anita. If this doesn't work
I will sell the POS.
Hmmm.. so this is a RIB with a double aluminum floor? Must be pretty heavy.
How heavy is the dingy without the engine?
The 4 stroke engine is heavy too I imagine?
I always felt like doelfins "dragged". They angle the dingy maybe, but not sure they are a benefit to get on plane... is the drag more than the benefit if you have marginal HP?
In a "near plane" situation I always started up to plane then I lurched my body forward (or had the passenger) and got it up.
Sounds like you need a lighter dink or 15 HP engine to me. I used a 15 HP on a 10 ft double floor heavy fiberglass
RIB and it screamed onto plane. (but was 2 stroke)