Playing with it.....
He's right, your really going to have to play with it till you get what fits your weight, so forth.............but from what I understand, the ballast is meant to displace more hull into the water, therefore, generating more of a close up in the rear as you move, causing the higher "V" pattern behind you. I know it's suppose to push the bow in deeper...............It's also meant to go slower with a wake boarder, providing stabililty to the craft........
But when it's all said and done, it will be what your going to learn through trial and error.........good luck!...:cheers: