FESkent. Please forgive me, the circumstances I was referring to was the fact that when it comes to solar panels on machines, we seem to have most of the options covered here in the US with the solar panels that are available here. My comment had nothing to do with teaching others to shoot.
But, since we have now touched on that subject, unfortunately many completely mis-interpret the value of the Unit Lead book. By suggesting that the CPSA method is an alternative system to the Unit Lead system, I suspect that's exactly what Freddypip did.
To become proficient with a shotgun, we need to establish lead in one of two places; either out there in feet at the target, or some measurement at the muzzle that correlates accurately into feet at the target. In both cases, we rely on seeing the barrel in our peripheral vision. Seeing lead at the muzzle has massive advantages. Please let me explain if I may?
The book breaks the variables of targets down into bite sized pieces. If the target in the area you intend to shoot it is a NARROW angle target, as remarkable as it seems, a 1 UNIT LEAD will break that target (either coming in or going out) at 20 yards, 30 yards, 40 yards and 50 yards and 60 yards. This is because of a phenomenon called parallax. Parallax is the same phenomenon that, as a road vanishes into the distance, it appears to get narrower. If the target is an INTERMEDIATE angle, a 2 UNIT LEAD will break it at ANY RANGE up to 60 yards. If it is a WIDE angle target a 3 UNIT LEAD will break it at ANY RANGE up to 60 yards. As I'm sure Freddypip will confirm, on page 36 of the Unit Lead book there is a diagram showing this and why it works.
Because of this, the advantage of seeing lead at the muzzle has massive advantages for the shooter. His repertoire of sight pictures can be established in hours, not weeks or (in some cases) years. That's why I make the claim to be able to get a shooter to logically read every target on a SC course in about 5-6 hours. Please don't bother to do the figures on this, I already have. It took me almost three years to compile all the information in the book.
Originally, many shooters and coaches missed this advantage but now, they have caught on. But of course, now it is their idea, not mine.