12-13mph is just way to fast from my experience. in my SS 9mph is the sweet spot for sure. I'm only running somehwere in the 1800-2000lbs
370lbs Ski locker
585lbs Under rear bench (Centered)
400lbs On surfside (Beside doghouse, as far forward as possible)
400lbs Centered under playpen
Was out surfing last night with just 3 of us and had a great wave. 9mph was defiantly the ticket
I also found a small turn toward the surfside as you get going seems to help crisp up the wave and the you can go straight from there
No Wakeplate
Perhaps a bit more weight up front? That seemed to be the thing that really helped out my wave.
Hope this helps.
85 SunSport - "Under Construction"