Weekends like this in NE (60+ degree days/cold nights) make the front doors off (backs stay on for the kiddos) and freedom panels off the most sensible option for my JKU. I have a hoist and could take off the rear in less than 10 minutes if I am feeling motivated, but the doors off/panels off makes for a real quick and appealing option this late in the season, and can be reversed just as quickly. Previously my solution was to put the roof panels in the back (and essentially give up that space for running errands/bringing along the dog) and lean the doors in a safe place in the garage. With kids in my house, "safe" is a relative word as bikes and toys go through regular rotation in and out of the garage. I needed a cart that could solve the storage needs of just two doors and the roof panels. I also wanted a cart that could safely hold this stuff when I pulled the top off with the hoist and I could wheel out of the way and into the corner of the garage, all in one shot. Then when the weather changed I could wheel out to the Jeep and put it all back on again. I did quite a bit of searching around the internet and came up with this iteration, and wanted to share. The frame and center post are made of some scrap 2x6's, a few pieces of pine ripped off a larger board to mount on the horizontal platform to act as stoppers so stuff does not slide around on the cart. Hardware is 4 caster wheels, 4 "L" brackets, a handful of drywall screws, 4 screw on rubber stoppers for the tops of the doors, and a roll of camper seal foam tape. I had the lumber hanging around, as well as the screws. The casters/rubber stoppers/"L" brackets, and camper seal came to around $30 at the local ACE.
It aint pretty, but it's sturdy, functional, and serves it's purpose nicely. It took about 30 minutes to make once I had the design in my head. Pardon the mess in the garage, wifey keeps me busy on projects on the weekends.