Someone is watching......
Actually I worked out I need a 6.032172 so will my 6hp suffice? While the rule says 0.6kw per metre their translation to .25hp per foot is out.
I have no problem with carrying a motor, it's the arbitrary LOA thrown together by people that think they know more than designers and marine engineers. That displacement, windage, prop size, torque, gearing, 2/4stroke play no part in determining a safety factor