I added cross members to support the fuselage at the wing spar and at a rear bulkhead. I glued in a couple of 2x2's to accept the temporary spar blocks to hold the front end in alignment. The rear has a couple of 2x4 uprights to keep the fuselage from sliding off the cradle. All contact surfaces between the cradle and the fuselage were covered with carpet.
The fuselage is now mobile and I am finally ready to get to real work of building airplanes again.