I have found that 3 ammo boxes from Harbor Freight works great. If the seats are up they fit perfectly between the tailgate and the seats. When the seats are down I take two bungy straps, turn the ammo cans the other direction and feed the straps under the handles to the anchor points in the bed. I have been on some pretty rough trails and they stay in place. They may move a bit but not a lot. Plus they are waterproof. I can post some pics later when I get a chance. I also have a small tool kit under the hood. I have a deluxe and it fits in there fine. Between the the cans and the tool box I have everything I can think of that I might need on the trail.