hello all, i'm new to this.i have a 88 procraft 19 1/2' with a 86 merc. 150 xr? on it.i know it heavy.but i thought it would run more than 55 mph.i have tryed a 23p mirage plus,23p quicksilver,25p laser,an a old style 24p chopper <which is the best so far> .with the chopper i can get a little...