I think I've done pics of this before, was planning on building more on it but that's where i stopped lol. Did add a crappy winch to it later on that I'll use for moving different stuff, not logs usually. Not much to look at but it does pretty good, very handy to have around the house, I'll use it to move all sorts of stuff around the yard that is too heavy to pick up. Flat free tires from harbor freight, for logs you lift to set, then pull down and start walking. Chains simply welded to the main beam, and a grab hook log tong from tsc. Works best with 2 people, 1 to run the handle and 1 to set/ remove hook, long handle so both can pull it. I made it to fit thru a gate, and after using it i wouldn't go wider since that's heavy enough, any bigger I'm usually dicing it or coming up with some non hand power stuff. If i had much larger diameter wheels it would probably work better yet, but that's what i built and haven't needed to change it.
That's when i built it, it's rusty now as is tradition. I can fit the log arch and the arbor trolley on the chipper tray too, so with 1 pickup load i can take everything i could possibly need to handle the brush and smaller logs up to 20" or so. When using an arch you rig it roughly in the center but light in the direction of travel, the butt will drag but very lightly, and you can even use a winch to pull, when the line goes slack it simply sets the load down so it acts as a brake. A guy can also walk it while it's being winched, so you can go at an angle a bit too and miss obstructions, attached to the arch so you can steer with the handle (watch tipping it).
Also here's a horrible pic of using a tree for loading, rigging a boom from a limb, porta wrap to hold boom tip up at a set angle, and the sailboat winch to lift the load, often with a drill. When hung like that it'll swing to a resting point, that's where you park, and you use a tag line at the end of the boom to pull it over the logs/ pile of brush to be loaded, then belay it to something like a tree or fence post any way you want. Lift, let out tag line which swings the boom over the truck, lower, easy peasy. I have the crane/sailboat mast on the chipper now making this unnecessary, but it's very handy sometimes, and is far more functional than it looks. You can also rig it with chain falls if you so desired, very handy if you're building/ working on something too. It's technically called a Chicago boom, I've rigged them up at work with pipe to use as a lightweight temporary crane, so nice to be able to lift and move loads in all directions with minimal effort, and all by hand. You can also rig one up as a crappy swing yarder, it'll give a bit of lift to the load so it won't dig in and then you can load all in one setup. You gotta have a tree to do it with but it can be handy if conditions are right, and would probably work great with the sled thing.