New guy stuff here.
I just bought a small 4 frame extractor with free shipping From Brushy Mountain.
After looking at it for 2 seconds it was obvious how easy it would be to attach a drill
motor to it. With a 3:1 increase in speed the drill will only be turning about 100 RPM.
I have photos here :http://mikesfarm1.blogspot.com/2007/12/extractor-mod-completed.html
Now get yourself a DeWalt rechargeable drill with an extra battery pack and you can take it with you to the out yard .