[Al Skierkiewicz]

Joe,
The basis for this rule is twofold. One involves damaging the carpet, so most of the rule addresses that. The second is intended to protect the floor beneath the carpet. In some venues, this is a basketball court or some other non-concrete surface. In general, this is interpreted as no metal touches the carpet. Each design and part are inspected at the time of inspection. If the part chosen poses no threat to the field or floor, it generally allowed.