All things are possible with a welder...
The sterns mad dog auger rack will bolt to your rear cargo rack pretty easily. I like them because they support the weight of the power head, are nearly 100% secure, the price is pretty dang good, they are simple, and they won't bang your auger up. The velcro straps can be a pain with gloves on, but I am still a fan. I had a set on my wheeler...
Now I have a set on my fishing snow machine.
They work great.
You should check out Johnson Cargo Systems too. They sponsor us and have really great stuff. I checked out their racks at the ice show in St. Paul before they started sponsoring us and I was impressed with the quality.
If you are looking for a cheap setup that works great, use the Mad Dog. If you want to set that machine up for fishing, call Johnson's
http://www.johnsonscargosystems.com/