hi
i have had mine about a year and i do find it helps. hitting the second ball hard enough to knock out the first ball takes a bit of work too, i do think it helps your feel like guru said, i feel like i have better judgement now and think more about distance than line when putting on the course, i would use it for an hour or move 2/3 times a week in the winter. i do find you want to putt more with it and try and get more knock outs, its simple but fun too.
bill