friend just bought a gdsd and boat. its a 18-50? with 35 hp. i rode the boat when it was new. 3 ppl and a load. with the 3 blade prop it carried pretty good but not all that fast. this was 3 years ago with a new prop. i stopped and looked at the boat the other day. i noticed the prop was showing ware, but im not sure how much. the tips were gettin pointed but i never saw a new 3 blade so im not sure how round they were before. it still has alot of cup left in the blade but you can see where there should be more blade w/ cup in it. i feel my friend is a little disopointed in the boat. it has a gd rock guard on it and what i guess to be a fairly worn prop. question: replace with new 3 blade or can you get a bb 2 blade on that motor? once replaced ill get him to take the rock guard ( anchor ) off and see how it runs. if bb is available for gd which one? ?x? size?