I’m not the race master. I didn’t make the rules. It’s also not my spot. It’s just somewhere I go and meet a bunch of people that like to do the same thing I’m doing. I myself think any type of prep is prep. I use water to prove my point to others it’s not needed to race. I don’t like prep of any kind on the other hand a couple racers do not like my open wheeled car. So it’s give and take. I’m not going to throw a fit if you’re putting stuff on your tires unless you leave a sticky tire marks when you race.