Mike,
There are several different ways to skid logs with your tractor. The least expensive is to just use a chain wrapped a couple of times around the butt end of the log and attach to a clevis on your drawbar. This is fairly safe since the log is attached below your axle. The problem with this is, since the butt end off the log isn't lifted, it tends to plow into the ground. If it doesn't stall the tractor, it'll plow up the ground.
The next method would be to attach the clevis to a drawbar on the 3ph. The drawbar looks something like this:
Then, you drop your 3ph down on the log, attach the chain to the clevis on the drawbar. This allows you to lift the log with the 3ph. Now you can skid the log without plowing up the ground so much. The is the method that I currently use. The downside to this method is that you're now attaching the load above the rear axle. If you were going along and the log caught on something, your frontend can come up rather quickly (and flip you backward if you aren't careful and ready on the clutch). I keep my speed very slow and watch for stumps/rocks/roots that the log may hang on.
The next method would be to use a logging tong, such as:
This eliminates the need to wrap the chain around the butt end of the log (saving lots of time and manual labor). You still have the issue of the load being attached above the rear axle and the dangers this incurs.
Another method would be to use a logging arch (such as
this one from NovaJack. )
I may eventually go this route. Either buy one or have one built. This solves the problem of the butt of the log digging in since it lifts it clear of the ground. It also eliminates the danger associated with having the load attahced above your axle since it attaches to your drawbar under the axle. I don't skid enough logs to justify the cost of a Farmi winch (see below), but don't like the dangers of attaching to my 3ph. To me, the logging arch seems like the perfect compromise. It's much cheaper than the winch (especially if it's a homemade job), but very effective.
Finally, and most expensively, you can get something like a
Farmi winch that will take much of the danger out of the job, plus allow you to skid more than one log at a time. Here's what the Farmi looks like:
Good luck and be careful,
BR