I have a 1966 Evinrude 9.5 and it's mounted on a 12' Sea King. The motor has an 8x7 RH prop on it.
My question is that It's very slow, what could cause this? It runs around 5.5 to 7 mph by my GPS. I have a friend with a9.9 that planes a 14' boat so I was expecting much faster speeds than I'm...
