I am currently in the market for probably a Pro 175. I am finding a lot of 50 hp 2 strokes and a few 60 hp 4 strokes and a couple 75 hp Optimax. Having owned a 60 hp 4 stroke I know they are very fuel efficient. I’m guessing the 50 hp 2 stroke not so much. I think both of these motors are boarder line adequate power even though I have outgrown the “need for speed”. My question is wouldn’t the 75 hp Optimax running at say half throttle be comparable in fuel usage as the other two running close to wide open?