So it's totally not RV related, but I have had some experience with the Tug mentioned by Craig. Friend of mine (friend of a friend) has one for his TBM. Got a chance to use the thing to move the TBM out of the hanger and this is a very well designed and powered device. It seems like an expensive toy, but it's honestly easy to handle and allows you to move around to make sure you DON'T bang into anything since it's totally remote controlled.
If you can swing it, it seems like a very useful device!
RV10 - #41778
Empennage - Done (for now)
Wings - in progress
PPL / IR - KVKX / KHEF