Thanks again to everyone who responded to my interest in the Briggs & Stratton 5hp motor, especially Scott/'bebe'. As expected from this quality group, I was provided with a wealth of information to consider. I have come to the conclusion that the "ideal" motor for an M15 is not yet made; IMO, the ideal would be: 3hp 4-stroke, 30lbs, F-N-R, internal/external tank option, short/long shaft option. For myself, I have narrowed my decision to 3 possiblilities (I want to sail on Lake Tahoe so 4-stroke is required). I will stick with short shaft for exploring shallow waters in lakes/delta around Sacramento: 1. Honda 2hp Pro: light weight (27 lbs dry) Con: don't like the clutch idea, would prefer a gear Con: barely enough power, would prefer some "reserve" 2. Yamaha 2.5hp Pro: Sufficient reserve power Pro: Has neutral gear Con: 10 lbs heavier (37 lbs dry) 3. Yamaha 4hp Pro: F-N-R Con: heavy (48 lbs dry) Con: cost premium about $350 I am currently leaning toward the Yammy 4 because: 20 extra lbs on the stern doesn't seem like that much on an 800 lb vessel with 2 moving 175 lb crew. If I put the cooler full of beer toward the v in the berth, won't that balance it out? I really like the F-N-R convenience. I'm hoping I can get an external tank option for longer range. Need to investigate this further. Well, there it is. I am VERY grateful to the group for their comments. I could have purchased the Briggs and not realized it is not intended for salt water until it corroded away in the Delta. Ran Dawson M15 #469 'Little Wing'