I had a close call about two weeks ago with my slippery trainer. It was cold and I had a big bulky jacket on. I had run 2 tanks of fuel through it and it was pretty well greased up and slippery. I was carrying my plane to the runway and somehow my jacket bumped the throttle wide open and It slipped out of my hand into the gravel. I could have lost a toe or been injured. The only thing I got was a broken prop and heckling from the other guys there. I need to get a neck strap so I can use both hands taking the plane to the runway. Anything can happen with these things and I don't think it would be possible to make a list of safety rules that would eliminate all accidents. I was too lazy to take the tx to the runway and come back for the plane. I'm not that lazy anymore.