Pavan...I do believe if you read Johns writings he's mentioned Howard being his sole instructor. Along with in his video (initial opening talk portion), though he doesn't come outright and say it in so many words in the video, he does in away....where he really does is in his book. John from what I've read wasn't a bowhunter or archer at all until he met Howard along with his brother Dan who learned the trade from Howard as well. Do you have a copy of Johns book? if you'd like I can message James. or you can, he runs Hunting under Heaven.
http://huntingunderheaven.com/ Ok there's one thing that does irk me about this hole bore a hole through it...it makes stincters feel good in my opinion, (mind you I shoot in a more fashion stincter myself so I'm not nagging at ones ideology as much as I am this hole principle of just bore a hole through it and letr rip).
The reality is before Howard became Howard that we know..he WAS in fact an accomplished target archer. Which means countless hours at a range, doing the same thing over and over again perfecting a method whatever it was. Did this method lend itself to bowHUNTING....according to Howards writings, NO. John follows the same principle 'you pick one or the other'. The fact is if you start with the target more remigmented style of shooting, you're transition into a hunter style if you will, is an easier transition. The bows tuned, the shooters tuned, the calculators tuned. What's left? Not much!!!
It would be like saying Magic or say Jordan picked up a bball and became some of the best if not one of these best bball'ers known to the history of the sport. Quite frankly there was a significant amount of time to build himself to this ho hum, bore a hole through and shoot, or casual style. He has or had if you will, already programed the computer we ARE programming..this is the one giant difference. his was, ours are in the process of. Its a lot like learning to fly cast on a river full of hungry trout with a fly on your line. you're catching fish, so you're doing something right. Many people settle here....where some take it far beyond the next level. John said Howard was a perfectionist....Howard achieved perfection and didn't settle for less.