One time I had a large tree in my Grapple to trim. Setting on flat ground luckily. I stepped off the tractor with the tree limbs barely touching the ground, trunk horizontal in Grapple. That's how I trim, do it all standing upright and never dull a chain. Anyway, I stepped off and walked around to the rear of the tractor to get my saw out of the scabbord. As I'm reaching for the saw it keeps tilting away from me!!! I can't figure out what's going on for a second. Then I realize my weight was the only thing keeping both rear tires on the ground!!! The tractor heisted the left rear tire about 2 feet off the ground and only stopped when the right end of the trunk touched the ground. In about two seconds I went from freaked out to amused. I talked outloud to myself, warning against this happening in a position that the trunk wouldn't have touched the ground, i.e., hanging over a ditch. Paid a lot closer attention after that!!!