Grizzly's Paw's old wood truck, a F250 named George, had catwalk across the back window for just such occasions.
I figure...leave a pallet in the bed. Flip it up over the window when loading or hauling. ..headache rack when you need it for cheap
I see some loads of wood going by with the saw on top of the wood. Me I'd run a bungee thru the handle, but most are setting there ready to fly around in a hard brake event. I bungee my saws, gas cans, (stuff) in an empty bed, I hate things sliding around back there. To me, at least a cargo net over the load would be prudent
I only do that when driving around the yard in 4lo. On the highway the saw would ride in the cab with me That sucker cost 500+ bucks, and thats cheap compared to some of the saws you guys run