You'd want to move the axle two feet or more. Might be involved but if you jack up the trailer it would be easier. Or use electric camper jack motors maybe... dunno.
It would be cool to be able to do it when underway, such as when you discover maybe your seat-of-the-pants guesstimate was off a bit... right after you clean your shorts due to an unanticipated sway event.
Heb Dduw, heb ddim; Duw a digon
I'm that gun-totin', farm-raised, evangelical, pro-environment, OHV ridin'/drivin', Southern civil rights pro-labor Liberal yo' momma told you couldn't possibly exist.