I truly would love to come use it. It would be a blast. I also really did not mean to rain on your parade so I will quickly answer a couple of your queries and then leave your to rejoice in your new toy (of course I mean tool).
All of this is IMO of course: Yes, for big trees (i.e. > ~10") a full size machine or backhoe is really needed for efficiency. However, for >4" saplings your
L3901 or my MX do a pretty good job WITHOUT DESTROYING EVERYTHING within 10ft of the tree. So a lot less vegetation recovery time and erosion problems.
I have a Bradco Jawz (the larger one) that I have used extensively on my MX but that is the limit of my tree and post puller experience. I have put it on a friends CTL and pulled/pushed over some 12" DBH Ash in Wet soil. The jaws are 1-5/8" thick (I think) and meet squarely so that even bitter root vine (pencil thickness and fragile) aren't generally severed by the jaws. That is a good thing if the object is to pull the plant up not cut it in two!
I think you will find that soil conditions, especially moisture, make a huge difference in what you can pull.
What mine does not do which would be really nice is it does not pick up the large pile of pulled trees to transport. That is a very nice feature of yours.
Cheers, good luck, and I repeat my apology.
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