I'm not so sure that "commercial filming" is that much of a concern, sounds kinda like BS to me. Here's why. I can understand if you're talking about a hollywood type production with lights, camera action (you know, a crew, big spotlights, sun reflectors, large format cameras etc) which actually disrupts things but, from what I've seen, of most outdoor shows you have one guy with a high quality hand held camera and maybe a sound guy with a boom (but even the sound guy probably isn't there most of the time). How different is that then, lets say, your wife or friend with your hand held video camera videoing you catching a fish or shooting a deer? Should you have to get a permit for that? Or, probably more likely, the government wants their piece of the pie since by "commercial filming" they are supposedly making money with it. (aka: another way to tax people).
