no semi's are street legal, and I'm with Stainless, There's no point having a drag day if people cant use any tyre of choice. the bigger HP cars will not get traction. Also, having it very close to the AFF drag day is not the best idea.. My suggestion would be you attend their meet and see whats going on.. Entry money by participants should be used to cover track hire, and trophies/prize money.. from what I understand, non competitors pay the track for entry, so you cant collect money for non competitors..