2003 Mercury 25 is what I have... The boat came with a plastic 4 blade prop with 13p. I also have an aluminum prop with the same pitch as the plastic but its a 3 blade. The boat won't do shit! It won't plane out or come out of the hole until I have drove it a good distance and then finally it will act right and this is without a load. I also have a slight bend in my prop shaft.

Given the info above my questions are:

1. Is the bend in my shaft causing me this problem?

2. Is the 4 blade with a 13p better or should I change it to the 3 blade aluminum?

Any other ideas if neither the bend in the shaft or the blade difference in the props isn't the problem?

Oh and I don't know shit about props and such

Thanks