I writted something about the power training in the group (well, miss the guide) and as my mate say the personal trainer is not a good option, because for 1 cone = 4 tokens and with 4 ttokens = 4 greens that in a fast trainer can be easyly 4 cones xD
So, power training is something manual, not this option called personal trainer.
That is what you have to do, tokens, for greens and reds, and train the player every hour