I am running a 90 horse mariner, 1993, on my 17 ft Lund Pro Angler DLX. The boat came with a 13" 21 P prop but it was banged up. I have just bought a 13.25 inch 17p prop which get me out of the hole great but only give me a top speed of 30mph and will only reach 4800 rpm's. This was with 2...
