I have had a weekly pool service for 20 years, but have only been using the TFP method for two. I have just over 50 pools, where only one is a SWG. The site has really changed the way I do pools and makes my previous 18 years seem mediocre. I see what you mean about it being boring. I felt that way too before TFP. Now doing my routes are actually fun. Maintaining CSI, knowing the relationship between chemicals isn't something many pool technicians know about. A lot of companies buy from people who are retiring and are taught to add this and that with no context. It is what happened to my dad, who then taught me this drop and dash way of business.
I feel ashamed about my previous years because thanks to TFP, I feel like I knew nothing, which I did not. Over a dozen of my clients saw a change in the way I did their pools and gave me a raise on their own. I definately owe a lot to this site and need to become a supporter sooner than later. So you definitely ask a great question and the answer is a definite yes. Not only can you use the TFP method but it will turn you into a pro. I think just knowing all these things causes you to care for each Pool as if it were your own. That's how I feel anyway.
I have said some things on this site in the past that wasn't agreed with about weekly chlorine consumption. I stated that all of my pools only lose about 4.5ppm of chlorine a week. With only on rare occasions does one lose over 10ppm. Given I have only been using the TFP method for two years a large majority of my pools have a CYA level of 120 so the chlorine stays around 14ppm. When it drifts to 10ppm or 12ppm I will add 64oz or so depending on the pools volume and next week it wIll be 12 again.
Speaking of pool volume. You would be surprised how many pool companies don't even measure your pool and just guess what the amount is. What happens is those I have spoke to keep their CYA at 100 but everything else at county regulation. That being FC at 3, etc so they are constantly buying buckets of algae kill. I have tried to explain it many times but it's like I am speaking a different language to them. All this being said. If my clients had the budget. I'd definitely give them a salt system. It would certainly allow me to go down on my prices.
I want to note that most of my pools are shaded for most of the day and I in no way intend to debunk what's been written here.