Lancair-RCU - there is a fellow in Aus. that does a respectable home-version of a mount quite similar in purpose and function to the one you mention. There also are instructions on my website on how to make one. If it needs a nose ring, the Arresti is easily configured for that using spruce sticks and a ply plate, again - check my web site under the Arresti info for details.

The "homemade" stuff can be done for less than $25 total...