Spin trainers

Alois and Jeff,

I have noticed that it is possible to buy 'spin trainers' (for example Tibhar sell one, and there are cheaper versions on Amazon) that are a ball fixed to a steel cable on a stand. I think the idea is that you can practice a stroke and see how well you brush the ball. I have been unable to find any video of anyone demonstrating one of these. Are they of any real value? do you have one and could you do a video review? 

Hi Nigel,

While I think they can be a good idea they are something that you only need to use for a minute or two to get the feel of the contact.  They are easy enough to make.  Just stick a piece of wire through a ball and get two friends to hold either end.