I took the TDSA tactical carbine course. Some comments:
There was no fire-line per say. Most of the time we were in three files, each allowing one shooter, who is actively supervised. I suppose this allows more instructor feedback and is much safer, but also allows much less freedom.
I liked the instruction on stance. I was okay with instruction and emphasis on firing cadence. I did not like on their insistence on a particular rifle position (canted from the vertical, with only an inch or so of buttstock on the chest). I felt a more universal position, less oriented toward maximum competition speed would be better.
The volume of fire was high. I went through maybe 800 rounds. It can be 10 rounds / mag change / 10 rounds / mag change / 10 rounds / mag release / off the line to go reload mags. It sure gives your gun a good test of its functionality. My ATRS modern sporter was getting too hot to hold at the handguard barehanded quite a few times.
There was not very much dynamic motion (two exercises sweeping targets front left / right or front left / right / centre). I would have preferred some movement (standing or walking in a line slowly, then have a contact left, etc...). Or changing stances, or forward / backwards motion.
There was very little emphasis on accuracy. Most of the time the firing was at 10 yards or so, on targets riddle with holes, so there was no way to assess your own accuracy. I suppose your can purposely choose to aim at a corner of the target... I had moved a Holosun 510 from my shotgun to my rifle for this course without zeroing the sight, but it didn't matter at all.
I'm not a fan of Silverdale. I was surprised there was no running water and only porta-potties available. Our range was protected by berms on three sides, but the firing table line of the neighboring range was within our berm as far as sound isolation was concerned. Most other people took off their ear muffs during cold range time, but I kept my on due to the reports from the nearest table of the range next door.
The instructors were fine. They were helpful and also tried to push you and add some stress to the training. Their standard on safety was good.
Overall, you get to do a lot of shooting. But I don't agree with the course emphasis on speed and minimal regard for accuracy. And the limited amount of dynamic motion meant much of the shooting was similar to what you can do in your lane at a local 15 yard / 25 yard range.
