I take it you’re wanting to skid 30’ logs that are on the ground, not trying to pull 18”+ trees out of the ground. There are a variety of methods which vary in cost and efficiency. Generally, cost and efficiency are directly related. Also makes a difference if you need to be able to winch the logs from some remote place (steep, swampy, down in a bunch of other trees you don’t want to take out, etc.) before lifting and skidding with the tractor.
Probably the most efficient and most expensive would be a rotator grapple such as
https://www.getbsg.com/3-point-tractor-grapple.
Next most expensive and efficient would be a skidding winch. I have a Farmi, which I like very much. Wallenstein has an excellent reputation as do several others.
Cheapest designed for skidding would be something like this.
https://www.maxxtuff.com/three-poin...hain?msclkid=4a2b7d11103416b3f1ff170b1da12db3
Modern version of the old bus hood is a thing called a skidding cone. Never used one. Looks like it would be a bit fiddly to set up but don’t really know.
https://www.portablewinch.com/products/skidding-cone-for-logs
Personally, I’ve used:
1) A pond scoop with a chain to the top of the scoop frame. Face the opening backward, extend toplink to angle down a bit to slide under the log(s), lift and chain it up to skid.
2) A chain from a shackle on the drawbar run over the back of a boxblade. Lift the boxblade and the front of the log(s) raise for skidding. Leaves a dent in the top edge of the boxblade and removes paint in said dent. Chain mark on boxblade is notable, but doesn’t impair function and works decently for skidding.
3) Currently use a skidding winch. Allows me access to things in areas far too steep to run a tractor.
All you need is something to get the front of the log off the ground. How you go about it depends to a large degree on whether this is a one time job or if it’s something you’ll be doing regularly. That and how challenging the terrain is.
Since people here seem to like pictures…
Skidding winch.
A couple chains and a boxblade, complete with chain scar.

Pond scoop (and the tractor it was used on). Take off the board to use for dirt work or skidding.