I especially liked how @
JCS put it, succinctly: "The greatest tool we have is our brains."
I have been messing around with dots since last July when I bought a G34+507c, and went through a couple carry gun options. Meanwhile, I'd put off buying the Steve Anderson books (meh - just another Dry Practice book) when on a whim I picked up "Get to Work" in September. My head exploded. It was like he was talking to me ("stuck in C class? Want to be in A class? It's about points per second. So get to work. Here's how.") I ended up buying the other two books, plus the Lenny Bassham mindset book. I completely overhauled my approach, from an online "Training Journal", to an offline, multiple file format, "Performance Journal". I've done an average of 27 minutes a day, dry, every day, in October. For November, today being the 11th, I'm at an average of 47 minutes, every day. I'm alternating the first Core Classifier drills in R&R, with the Match Skill drills. On alternate days I do his plate rack drills. Every other day or so I dry shoot the Gabe's Performance Standards at the Light Pin level.
I can absolutely say that my index, out of the holster, is vastly improved than when I started on this phase in early October. And my par times are working steadily downward. First "real" outdoor USPSA match in CO under this program is early December. Should be interesting.
Back to this thread, I wholeheartedly agree, learning to index the dot isn't something you necessarily need an "instructor" to teach you, if you are willing to put in the work, and let your mind shot call as you do. You just need to work your butt off.