I am not a person who spends a lot of money on gimmicky things. My IG feed and youtube channels blow up with "the next big thing" golf training aids since I am constantly watching little "help" videos. When I saw this putting tool, I scrolled right past because it looked complicated and pricey. I already have a putting aid that has a long strip of fabric with a slanted return. What more could I need? Then, focused more on women golfers and their unique mechanics of the game, this product popped up again. When I saw the precision needed to master the putt with the device, I was intrigued. I looked for something similar, and there just isn't anything. So I ordered it from Amazon. And in the 24 hours before it arrived, I watched numerous youtube videos about it and got very excited to try it.The day the Truth Trainer came in the mail, I played 18 on a course with newly aerated and sanded greens, with 59 putts, and decided I'd better do some work. I loaded up my the Truth Trainer the next morning and took it to the practice green at my closest course. The feedback I got from using this tool was a little overwhelming, and oh so helpful. in the courses near me, the practice greens are anything but flat, and finding a level spot was the first challenge, but I eventually did. I quickly learned that if you set up in your normal stance and you can see both strings (the blue should disappear under the white), then you are already identifying an area that needs adjusted. Only when you consistently set up without seeing the blue string have you mastered that part of play. And the strings can be moved around to accommodate different types of set-ups and still give you that feedback.The "gates" are easy to adjust and also give feedback. I tend to draw the ball to the left, so I place the gates in (from the front) the second and fourth slots. If I hit the closer gate, I'm still pulling the putter. If I can hit 5 shots without hitting the gate, I move farther from the hole.One of my favorite features of this device is that it forces you to stay within a consistent area of swinging your club. Using more finesse, you don't have to move the club so far. It's plenty wide enough to accommodate a swing with the power to hit long shots, but helps you to observe your backswing and follow through to understand distances of both. You can adjust it by moving the ball pad or not even using it.I use this on regular carpet in my house because it most simulates the speed of a green. I also use it on the perfect practice mat if I want the feel of a faster green.I do believe that consistent off-the-course practice is the only way to improve my game, and I believe that this tool provides me the most feedback from that practice.