I made a QD mount for my auger last year using some weld-on QD bucket brackets from ebay. Having the auger on the backhoe saves so much time putting in posts and you have much better visibility. I just plumbed it into the thumb hydraulics and it works great. You do want to be sure to have some weight in the loader though or it will get really light in the front.
My hero right here. You got pictures?