Jack Costella told me "Add weight until it slows down. then remove weight."
I thought Jack's mantra was "add gear till it slows down, then add power"
Jack has a lot of sayings and some might be to throw us off, but I pay attention to all of them.
Seems like the ballast thing might also take into account the riders weight and the front/rear weights. How much do you guys weigh or how much weight is on the rear tire with you and the ballast on the bike and then how fast are you going in that configuration, how much HP are you making and are you happy??