I have a 1998 Maxum 2100SR2 (21ft) with a 5.0liter - 300HP Mercruiser engine powering a Alpha 1 Gen2 outdrive (1.47 ratio). I currently run a Mercury High-Five SS 5-blade prop 13.25" 19P. I typically get 50mph at about 5500rpm WOT. The boat weighs in at about 3300lbs.
I'm thinking of...