Last year I bought that happy troller and it did work well. my boats 18 and I have a 75 hp e tec. After a year of abuse, the flap was starting to crack and flex from the strain and the line was pretty beatin up. fishcrazycharters.com trolls and pulld a drift sock over the side tied to the cleats. Says that it adds side to side stability. So I bought a small one and am going to try it this year