I have a Carolina Skiff J12 with a 2005 Johnson 15 hp using the stock 9.5 x 11 prop on it. The skiff has middle and back benches with full front deck. I've got a trolling motor, battery, 6 gallon tank, plus gear, and my 200 lb self. Bottom line is that no matter how I shift weight around and play with the manual tilt on the motor, I can't get it to plane. It originally had a 20 hp, but after bring at the ramp for 2 hours for the last time trying to start it, I sold it for parts and replaced it with this. Marine mechanic has been all through this motor. We've rebuilt the carb, run Sea Foam treatments, and aside from being low on power, runs really well. Any thoughts on re-propping this setup, or is it a waste of time? I don't want to put too much more $$$ into it since the boat will be sold and replaced in the next couple of months, but I do want to have it performing as well as possible for its next owner. Thanks in advance!