You can probably stuff 10 pounds of potatoes in a 5 pound sack, but don't be surprised if something rips. It might be a good idea to line the bed with a piece of 3/4" steel plate so you can get a little bit of traction if you go with the rat motor.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!