Some bedliners (Leonard made mine) have built in pockets that will hold 2x4's spanning the length of the bed. These notches allow you to carry sheets of plywood in the bed, and are at the same height as the fender indentions. Cut the 2x4's to length, wrap them with indoor/outdoor carpet (not astroturf), and use velcro tie wraps around your landing gear to hold the fuse in place. I do this with my magic, and dont even have to take the wing off. You can also epoxy a couple of pieces of furring strip (1in x 1in in the aluminum channel of your cap, with enough clearance for a long piece in between to span the upper portion of the bed. Just screw a piece of furring strip into one of the pieces with a single screw on either side of the bed, so it can rotate over the span piece and hold it in place. Wrap the span piece with carpet, and you now have two levels for holding planes. The top level comes out easily for large planes, or the dreaded non-rc activities.
Using that system I was able to get 9 planes of various sizes (.10 up to a 42% bipe and a 1/4 scale extra) in the back of my truck at one time, plus 6 gallons of fuel and other misc stuff. (and its a regular bed Toyota)
For my U Can Do 3d, I am making some PVC U shaped channels that will slip into electrical conduit retainers on my 2x4's. Two will hold the fuse (70 inches long), and two tall yet narrow ones will hold the wing (65 inches). Use some pipe insulation on the pvc, and will save a bunch of hangar rash. The PVC retainers will just slip into their "sockets"(retainers), and can be removed when hauling other planes. My main goal is to be able to transport the UCD on the lower level (in two pieces), and the magic (1 piece with the wing bolted on) on the top level. Field box and fuel on the floor, bungee corded down, along with room for a couple of fold up chairs.

One more great tip is to run a 12 volt power lead directly from your battery to the back of your truck. Put a 30 amp fusable link at the battery end, and connect it to a Radio Shack 3 outlet cigarette lighter unit. Use a pair of Tamiya battery connectors for an RC car so you can take the power station out if needed. I also added two pairs of female banana sockets within the cigarette lighter unit. Use at least 12 or 14 gauge wire for your feed, and tie wrap it up out of the way under your chassis. This gives you a convenient place to put a field charger, cell phone charger, spotlight, or any other 12 volt device. I have used mine to fuel and start a plane when my gel cell died in my field box.

Good Luck,

Steve