So far, so good
I know quite a few guys who have 4 stroke Yamaha's. My Dad has one of their kickers. LOVES IT!!!!! But all my buddies (they're almost all jets) can't praise them enough. The few that have actual skegs/props on them have been delighted as well.
From the one's I've used, I think you'll be in love. I'm planning on buying a new Northriver once I'm back to work. Going with a 200 hp Yamaha on mine. Tried out the same boat equipted as such, and was amazed.
"Good angling ethic is not a monopoly practiced just by fly fisherman" - Bill McMillan