Anyone tried an adhd coach? | ADHD Information

My son (12) always has trouble at this time of year- holidays mean routine disruption and all that- but he's also starting to get that typical teen attitude of "I already know everything and you should treat me like an adult and let me do whatever I want."  Which is, of course, a problem since he acts like he's 9 most of the time.

DH and I were talking about finding him a therapist, but when we were looking for ones that specialize in adhd we ran across ads for adhd coaching. 

I was curious if anyone out has tried one for their child? Or themselves- I know I'm not the only mom on here with a dx too.

Good? Bad? Does it make a difference, or is it a waste of money since insurance won't cover it?