Very, very good advice. Thank you all. The tractor I am considering is a shiny new cab model Kubota Grand
L6060. My use for the wood is to burn about 90% of it and get rid of it. The larger stuff I will buck up and split into firewood. But since the wood is pine it is not very desirable for firewood. At least in this area. Hardwoods much preferred. My time is limited, and I can't tackle the job and stay with it until it is done. I will work on it, time permitting, here and there. And, once it is all complete, I will probably use the winch to do general cleaning or firewood production thereafter. So I think I can justify one on a long term basis. I am getting a quote from a contractor ... just to see ... what someone would charge to clean it all up. Then compare that to a $60k tractor/winch investment.
On my shiny new tractor I will add an ugly new skid plate. So many have commented about that. My wife and I are licensed HAM radio operators. I will put a 50watt radio in the cab, and carry a low power walkie talkie. If I need to transmit, the low power walkie talkie uses the 50w radio in the cab to boom out a signal. I think I need someone monitoring the other end of that at all times if I am working alone, but I see already the greatly increased utility of "one in the cab, one in the woods." And the reason to not have others milling around.
Downsizing the winch to make it the limiting point is interesting. Of course I was looking at the biggest baddest winch possible. But sizing one smaller than the tractor could otherwise handle is an interesting approach. And I have pretty much decided on a remote control for the winch-- just in case.
I will have a grapple on the front end. So I can't use a bucket of dirt for ballast. Maybe I need to price some front weights?
I was not aware of the "yaw limit" when pulling but that makes sense, as does the issue of pulling if the tractor is on any side slope. I have good access to the area so I think I can make straight pulls. Then once the log is at the tractor I can maneuver a bit to get it driven to the work area.
The caution about slipping on terrain or just getting on/off the tractor is good advice. I am 60+ years old, a bit fragile from some past medical treatments but not too bad. I can do most anything, its more like when I "hit the wall" from fatigue or bending I am done for the day. Fortunately I have had a lot of years to develop good skills to not fall and be careful with footing and movement. My hobby is fishing in mountain streams, often in difficult terrain, with lots of boulder hopping and picking your way through debris and snags. So I think I will be OK but also need to be vigilant to stay on the upside of logs in case one shifts unexpectedly.
A last comment on hydration. I heard some time ago to NOT freeze water in your drinking vessels. Something to do with it releasing toxic dioxins into the cup you are using. This might be more for the cheap plastic water bottles-- not sure. But you might consider checking on that. Thank you all for great advice.