bigbulls has it right.

A shop owner brought one to test at our club last year and it looked like it would be a good target rest if they worked out a few bugs.

The weight and lack of adjustability seem to be the major concerns of most. You have to have your arrow length exactly right for your draw length. If you creep or pull into the stopseven a little bit the arrow falls down.

If you decide to changethe draw length on your bow, you have to make up new arrows.

It could be a good rest, but it needs a lot more work.