control tyre racing is good as far as im concerned, you should however only allow 1 set per meeting to keep the costs down. As for 10.5 motors, mmm, I'm not sure this will help, I run 7.5 2wd and 6.5 4wd. I can see why you guys want to do this, it is to prolong the life of the carpet. What I would suggest is, teaching your drivers discipline, by that I mean, when they are up against a track marker they don't power up and burn the carpet which is were damage to the carpet comes in, you will get the same problem no matter what motor you run. modern 10.5 motors with the correct settings and boost will also cause damage, maybe you should look at 10.5 or lower blinky class for buggies? Just saying.
Craig. control tyre rule normally applies to rear axle only unless its worksop