I am buying a yamaha 8hp four stroke tomarrow and will call willie to see what he suggests, but am wondering what some of you had to say on motor shaft length for a willie 16x54 drift boat? I found out from dealer that lengths go to 30 inch. I would sure hate to come up short....and can it be too long?? I'll probably end up bringing boat to dealer too....almost got her ready ******! SOON!!