Dan,
Very nice. I'm sure many would question why not a used Mazda engine vs. a tractor engine...because it was a fun chalange!
Where did you get the engine? How much did it cost? Did you go with the 28
Hp for size or cost? I know my KAMA 45
Hp engine is a beast but it's big and heavy.
I've considered putting a diesel on a pontoon boat because I hate 2 cycle engines.
Again, nice work
Patrick