When I had to take the mount and legs off my Rv-3, I bought an ATV/Quad Bike lift. Made a wooden saddle to fit the belly and add some height, which supported the aircraft on the mainspar carry though.
RV-3B G-CCTG - Purchased May 2020
RV-8 G-MIRV - First flight 1 July 2019
RV-6 G-BZRV - Flown the nest.