I have tried a lot of different training aids in the past but none of them really have a big help. My buddy told me about Pro Tour Card and actually the cheapest traing aid I've ever had too - $20. It's different from other aids but also kinda hard to explain. It's really helped with my putting and all the drills I had not seen before. The other day in my round I only took 20 putts! That's really being in the zone for me and probably anyone. Like I said, it's hard to explain but go to the site to check out www.protourcard.com