Yeah, I know my little 1100 is a beast to move and I even made a longer handle. Make sure the head is up to move the center of gravity to the back also. I really think they could move the wheels a little farther forward to help.
BSS1, great idea on the clamp. I think I can come up with a similar arrangement with out the expense of a special pipe. I know I also need to design and build a stop.