I have a 6.5 m Ribcraft, aluminum hull, and don't see any problem w/ my 150 Honda. I recently had about 1200 lbs in it (motor excluded) and had no problem getting up and going. I think I topped out at about 33 mph, whereas alone I can get about 44 (via gps). This is my first 4-stroke, and it sure is nice to be able to talk to the co-pilot without shouting, and the fuel economy is nice, too. What a 150 hp 2-stroke would hole-shot like I don't know, but I get up and go just fine. j
Life is a grizzly experience.