Why most 'professional' chippers come equipped with an above feed chute winch and cable, so you can skid the trees to the chipper chute. It's skids them and lifts the butt into the chute. Sure you could fab up something with an inexpensive HF winch. A 3500 pound, 12 volt HF winch would be plenty. HF even sells a wireless remote as well as a pendant remote. I installed the wireless remote on our Kubota SxS and I can operate the winch from the drivers seat. Put the 3500 pound winch on the SxS. You can get them with a steel cable or a synthetic rope, your choice and they are on sale presently. You'd need a 12 volt power supply but your tractor is 12 volt, so a 12 volt male-female plug and a bit of wiring along with an above chute frame is all you'd need. 3500 pound is plenty enough to skid any wood you need to chip. Me' I'd go with synthetic rope so it it gets sucked into the chipper, it won't destroy the knives.The power of my Kubota M6040 and the heavy fly wheel of the Wally BX62S are a perfect match. Even when chipping the 6" green pines - the Kubota does not slow down.
Some years my son and his friend will come out and help. When it's time to chip. NOBODY - including me - likes the dragging part. When I finish falling all the trees in a stand - looks like a giants game of Pick-Up-Sticks.
So.....decide where best to have a pile. Start dragging the fallen trees to that spot. I'm not working hard enough unless I stumble and fall a couple times. Most stands will take four or five piles.
When all the fallen trees from all the stands have been drug to piles - it's time to chip. It's also time to let all the scrapes/bangs on my forelegs heal somewhat.
Chipping is the fun part. My Kubota/Wally setup will take trees as fast as you can feed it. Best to wear gloves. The bark on a pine tree will grind the palm of your hand to hamburger - without gloves.
So much for the life of a tree farmer.
Yeah, I had a Patu years ago that was "self feeding", sort of, some of the time. The only thing I would consider is a power feed of some sort, typically hydraulic driven.I have a Wallenstein BX52 which is supposedly self-feeding, but I don't think it could self feed a 2x4. Otherwise it's a robust machine. I know for a fact the chute is stronger than the garden gate and garage side seal... It does have the option to fold up the chute for transit which I need to get into the habit of doing.
I think the price of the Woodmaxx hydraulic feed is appealing. I have their snowblower and it's overbuilt.