Recently installed a 2006 Honda BF-20 4 stroke onto my 15' trihull to use on a HP restricted lake.
Current prop is aluminum, 4 blade, 9-1/4X10.
Currently, my max WOT is at 4100 rpm per tiny tac. Engine is noticeably lugging, and boat will not plane. (recommended WOT is 5000 rpm min to about...