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Tedious,

No point belaboring this subject. The story is clear. According to a Yamaha distributor web site my short shaft 50 h.p. is 175 lbs. The link for the info is below, but it loads a bit slowly:

http://www.yamaha.co.za/site/1778/view/50hmhos.html

So, as I was originally inquiring, what 4-stroke can match this in terms of h.p. relative to weight? I have yet to find one. Also, this has nothing to do with "overpowering" a boat. As you will see in my original inquiry, I was only pointing out that 4 strokes have a weight disadvantage, especially for a boat like mine. Regardless, thanks for your helpful suggestion concerning down sizing to the 30 hp.

Geo.