My tracker 175 with a 60 Mercury came with a 3 blade prop and it took forever to get on plane even after I added a hydrofoil on the foot to assist the hole problem. I saw something on YouTube about a man with a boat exactly like mine that went to a 4 blade prop and he reported that not only did the boat get out of the hole quickly but added 3 mph on speed. So I switched to a 4 blade and it was like getting a new boat. Handling was so much better but I only picked up about 1 mph on top end speed. I’ll never have a 3 blad3 again for this boat.