So I just picked up this 70 something Tahiti and I'm ready to order a jack plate for my 1983 Mariner 115hp L6. But I don't know how much setback to get. No pad on this boat, but not really needing it since I don't have much chance of cracking low 50s with this motor. Transom has a couple knees on it, so maybe they were added somewhere along the line.

Also, any thoughts on a good prop for this thing?

Stephen