Harbor freight has furniture moving dollies for $11. i have a few of them that have been under everything from race cars to engines to airplanes.
+1 on those dollies! The tire jacks from the OP do not work, don't waste your money on them. Remember these planes are not heavy. They can easily be lifted to place on "regular" dollies during construction.
Av8r3400 Kitfox Model IV
The Mangy Fox
912UL 105hp Zipper YouTube Videos