quote BillW:
It looks very narrow and low-sided. I’m getting chicken in my old age but I was going to guess 7.5 max, for safety….
Yeah, I’m the same way – not as brave as when I was 20 years old! I have a 1947 Sportsman (2hp) and that is no problem. I also have a 10hp Johnson (QD23) but am afraid that may be a little much for the 13′ boat.