Looking for advice on what prop I should get. Wanting to get a new stainless prop for my 2010 yamaha 25 2 stroke . Boat is a 15/42 welbilt. I think the one that came on it is a 11. But not positive. Have to look again. Just wondering if anybody has been in this situation. The one It has on It now seems to do fine. Just wondering if another pitch would help any? Thanks in advance.