Sorry guys haven't been around much lately as I am extremely busy with my day job. Myself and two of my training staff have been hijacked to help "bail out" certain individuals with piss poor planning, so I am seeing forty new students per week with two, 2 day classes per week. This will continue for the next 6 months or so, until I get into my standard 10 week course. These courses are Glock related and I am seeing it all.
The Glock in particular has its own unique "personality" when it comes to shooting it. Those with the biggest issues seem to be shooters with a lot or ingrained training on another pistol type. The Glock grip angle, hump on the backstrap and the curved face of the hinged type of trigger can create a myriad of issues, even in experienced shooters. The biggest issue is that right handers tend to shoot left and / or low left with the Glock. This is EXTREMELY common. And of course vise versa for lefties. It takes a very good instructor to be able to identify the exact issue and give the correct fix for the problem. There are what I consider "band aid" fixes for the problems but a true fix is more ideal.
What is seen in the Haley / Avery video's has been around for a long long time as mentioned by Ron and they are still valid to this day. I have been using similar concepts to achieve the same goals for many many years. You are now starting to see some of that information hitting youtube by some solid trainers. I tend to combine the concept of the Tigerstripe drill described by Avery but I perform it as a variation of a one hole drill in conjunctions with a cadence drill, in order to get the shooter working on the correct grip so the pistol tracks only up and down while training the eye to track the sight movement. The one hole also concept combined in this drill also works on minimizing muzzle lift for quick follow ups. I basically combine several drills seen on youtube by Avery, or the cadence I saw done by Defoor into one master drill of my own. It would have made for a good youtube video.
Of course there are tons of drills and a TON of information that was never covered in any of my youtube video's. What I had posted was obviously only the tip of the proverbial iceberg and the rabbit hole runs very deep, if you are inclined to get deep into the how's and why's of things. Avery and Haley are calling it the science and biomechanics of shooting, which is not wrong, just something that some of us have been doing for many many years but may have never really attempted to coin any terms to describe what is happening. I can actually appreciate the direction that many of the latest "top" trainers are headed and perhaps just validates the concepts that I have been fighting over for many years when they were not so "mainstream" as they are today.
As for the youtube thing, or online content in general, it was getting a bit overwhelming from the response and inquiry which was 99% positive but I found myself unable to give the inquiry the attention I wished I could. It almost felt like a full time thing and I never monetized or used it to advertise a business but was for the pure desire to contribute to the general shooting community however with a growing family and full time commitments it was getting harder to justify. I will also add that many entities are taking issue with social media content so that was always a consideration. I will also note, that many of the more current youtube firearms channels were some of my early subscribers. I know that mimicking is supposed to be flattering, but I was more than a bit disappointed when I put out a video and another youtuber copied the video, but obviously did not truly understand the concept. This was frustrating as they were putting out incorrect information as if it was correct. Unfortunately some have gone on to grow into large channels, blogs, business etc and at least I am no longer providing information that they bastardize.