I have a 2002 Wellcraft 21' , 5.0merc carburated, 220hp.<br />i believe my prop is a 14.5 with a 20 pitch, aluminum. i cruise alot with my buddy, he tops out around 60mph, im about 48mph@4800 rpms, which is according to my manual, is max rpms for that motor. i usually pull only tubes, or cruise...