I'm not much help on the OBs, but I do have an 8 hp Yammie hithrust on the 25. Very happy with it. Pushes the boat 4 knots into wind and chop and 5+ in calm conditions. This is far superior to the old 15 hp Evinrude I had on the Seabird. It had about zilch low end torque and would not do much at all into wind and chop, and that was with the biggest diameter, lowest pitch prop I could get. .
|