Sorry, must have hit the wrong button. We have a 1990 Fisher, 24'x8' two log pontoon, it weighs about 2400 loaded. It has a 1990 90 HP mercury with a 13p prop. WOT gives us about 3200 rpm and about 20.5 mph. I've called Tracker and got no help. Just received info on TAP Fins, nice but pricey...
