I just made my Bi Fur pod from Varmint Al's web site from some scrap 3/4 x 3/4 wood. Works great, can also be uses as a walking stick too.

Varmint Al demonstrates it's use.
Here is the standing position with the fully extended Bi-Fur-Pod. It makes a much steadier hold than offhand.
But then I don't have all that money to buy stuff I can build my self.

Al