What would be the best predictor lifts for American Football athletes? Charles' referred to Power Clean being the best predictor for athletes needing to overcome inertia (Seems excellent for your lineman who need to explode off the ball and quickly engage another player). But, for your wide receiver/defensive backs/skill positions, who rely more on elastic qualities, would a Hang Clean be better or Power Snatch which Charles liked for jumping athletes?
That's the thing about predictor lifts. They are only chosen as such because they correlate well with documented performance. Yes, the power snatch would be a better power developer for the person, but across the sport as a whole, the power clean has been accepted as a predictor over the snatch (probably because its easier for people to do). Now as far as your own data, I would use the power snatch to see if what you are doing is working or not, absolutely.