Originally Posted by Bogotazo
You'll end up with bad habits you've ingrained in your execution, not any sort of fundamentals or advanced techniques. You can try complex counters all you like in front of a mirror imitating ATG technicians, meanwhile a kid starting fresh in a gym is going to be told straight away not to flair their elbow out when they jab by a coach. The latter will do better once he's in a ring.
I don't know. I learned a lot from B HOP. I could teach a kid in a day one particular trick, I guarentee it will work.