I have a 30 horse honda. 9.9 X 11 prop (16 foot v bottom boat). I took it out the other day and the boat was a little heavier than I would like to see. The boat refused to get on step. The rpm sounded fine and the motor didnt seem to be "bogging" but it surely did not want to push the boat. Without the weight it seemed OK, it wasnt going to set any speed records but it did plane out.
Im thinking I need to adjust the trim first of all (it is manual so I didnt mess with it out on the water). But I also believe I would benefit from a new prop.
What would the advantage be of going from a 3 to a 4 blade in the same pitch? Which way should I consider going with the prop to get better performance? The lowest number available for my engine is 9.9 by 9 and the highest 9.9 by 13.
Ive tried to do some research on my own but I dont really understand the dynamics very well especially when numbers are involved.
Thanks in advance.