Different boat, but in my 21v I need around 950 in the surf side corner and it makes an ok wave at 11 mph and wake plate 1/4 way down. However if I have 2 extra people on the boat and put them on the surf side in addition to the 950 in the back it's a pretty nice wave. I find any weight on the opposite side and the wake starts to wash out, same with any weight in the front.