1978 Evinrude 70hp
1979 15' Crestliner tri-hull
2 adults, 1 teenager riding plus another in tow
The Evinrude manual says 5500rpms, but the 13p tubing prop hits 5500rpm with throttle to spare. I start to get nervous around 5500rpm. The 17p cruising prop WOT is 5500rpm, but I've never given WOT...