Pro Putting Trainer

[MiuraMan]

Check out this review of a new putter training aid:

Well I have struggled with the putting yips for the last couple of years and I have never purchased a putting training aid before so I went ahead and placed an order. Once I have the device in hand I'll post my own personal experience with it. Enjoy. 

[iacas]

Meh.

I love putting training aids. Just made a big post on Blast.

But I like two sticks with a hair tie for this stuff. Costs you about $4. Add a yardstick for another $3. This thing is "substantial" as they said, and it's going to affect your balance/feel quite a bit.

I didn't like his putting stroke at 5:05. Stiff. Heel up.

[MiuraMan]

Here is a different, less costly training aid that accomplishes the same as the above. 

T-Stroke ® Putting Aid - PlaneSWING

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Ground-breaking training aid. Delivers enhanced alignment, rhythm and connection delivery. Delivers a better golf ball roll. A better-quality strike of the golf ball. Increase your odds of holing those key putts!