It's difficult. If I'm coaching a 10 year old at state, and he's down 5 points with 15 seconds to go, I want him to know how to run a headlock. If I'm coaching a ten year old who is pinning novices in the first period with a headlock, then that's not good. It's also difficult to define what is acceptable. For example, a ten year old leg rider. Not really junk and is still okay in high school, should that be discouraged, or taught to run properly? The focus should be fundamentals for sure, but different kids are ready for different things at different ages.