Hello everybody, this is my first post.
Just wondered if anyone has used one of these and if it's any good.
Is it better than other putting training aids, such as the one Ernie Els endorses, The Rock Roller?
Thanks in advance for your views.

Personally you can make this stuff yourself 2 pieces of string and a some tees.

It all depends on what putting stroke you want to have and what feels natural to you either straight back and through or an arc style putting stroke.

I've seen Pelz on The Golf Channel advocating a straight back and through stroke so i thought i'd look to groove that type with a conventional pendulum action.

If your going straight back and through then the 2 pieces of string tied to some tees will work give it a shot as you may save some cash.

Okay, many thanks for the advice.
Part of me thinks it must have more to offer than something that simple could provide, but the string and tees would seem to do something similar, i guess.

And £59.99 + p&p is a lot to splash out - i don't want to be a sucker if there's a cheap DIY alternative!

I thoguht it depended on if you are using a balance face putter or blade putter?