I don't know if using a trainer will add any sort of info to your profile, that would depends on the trainer. The safest advice i can give you is that if you value your profile dont cheat, that's what Microsoft like to reset peoples gamer score for. If your using trainers to unlock achievements you might unlock them before you should if you progress in the game normally. Your stats in some games might not be obtainable without the use of cheats, easily flagging up that you have cheated which could easily be noticeable when there synced back to live. e.g. XP in Halo 4. You clearly care about your profile, so i simply just would not cheat / use trainers on it. I personally use offline profiles for messing about on.