Hi John and Richard, I am having the same thoughts for the same reason.
Richard, how much of a load have you put it under? Not sure what measure to compare but do you notice a significant drop in oomph with a heavier load? My dinghy is 2.3mtrs and I occasionally carry 3 adults. My Honda 2.3 is ok but it is definitely more of a struggle with 3 than 2 people.