Review on Master Your Swing with the Perfect Release Golf Club Swing Plane Trainer Aid by Nelson Calafell

I'm not sure about this learning tool yet. I've had it for a month now. It appears to do what is advertised i.e. the cord tension is present throughout the swing. However, the problem I'm having is that I don't see how this fixes the faulty swing. No matter what I do, swing flatter, swing higher, swing inwards too much, basically the swing isn't flat, even exaggerated, arms don't stay straight, no matter what swing I do, the line stays nice. much at the same voltage. So I'm not getting the feedback I would like for swings that aren't on an airplane. This is a very expensive product for what it is. As I mentioned in a previous review, I get more out of using center poles with the right bits.