50 will get you there. I bought two new 4 stroke Merc 50s last summer for builds. One I put on an 18’ Lund build out, tiller, and the guy does very well with it. The other still in the crate in my shop looking for a home.
I went when he bought the rig for a run and I was impressed with that Merc. Your boat may have a bit more built in weight but I’m betting it scoots. I’m not sure where your using your boat but in years past adjustments were made in prop pitch for the elevation, helping performance. Maybe the 4 strokes are beyond that?
Osky
