I would say that any group larger than 15 people would need a permit. The permit fee would be dependent on the equipment and the size of the workforce. It’s easy to articulate how 1 person will do a fraction of the damage that 100 will do. Charging a 3 man crew the same as the guys filming a Hollywood production is asinine.So how do you determine over use? Is it 1 guy making money off our lands or a train of guys doing the same?