Honestly, I don't know if practice will even matter with how ridiculous the drafting is. This was by far the worst problem with prologue and now we head to the finals of GT academy with it still in the latest version of the next iteration of the game. The last place you want to be in a race is out in front, is that racing? It wouldn't be so bad if it wasn't full effect or nothing, the fact that the boost amount is way over done AND you get the full effect 1 sec or more back just ruins racing in the game.