So just to update, the job went better than expected. Wife ended up claiming the seat of the tractor, so actually all I had to do was handle rigging the chain to the bushes. That sped things up. Ended up pulling 15 to 20 bushes total. Some smaller and some larger but all of them had been in the ground for a couple of decades. I wrapped one end of the chain around the base and cinched on a link as tight as I could to "choke" it. Then hooked the clevis of the other end of the chain onto a link near the base also. This gave me a large loop of open chain that I then could connect to the two bolt on hooks I put on the tractor bucket as needed, which made the force even across the frame of the loader (imagine the chain making a "V" shape coming from two points on the loader to one point at the bush). The Workmaster 40 at idle had enough power and flow to pull up all the bushes without much fight. There was only one bush that fought us a bit, and on that one we just rocked the bush back and forth (hydro trans is awesome for work like this) until the roots let go and up it came.
For about half of the bushes there were access issues, so I connected the tractor end of the chain to the draw bar, ran the full length of chain plus a fabric tow strap to the bushes, had the wife drop her down into low range, and pulled horizontally. To my surprise the tractor ripped even the largest bushes in the yard right out like that. One in particular was such a large bush that it alone filled up the entire bed of my F-250 pickup. On that one I had to rig the strap up about half way on the trunk of the bush for leverage, then the Workmaster pulled it out.
These larger compact tractors are beasts. I figure with the FEL, box blade on the rear for ballast, fluid in the tires, etc. it probably sits at around 5,000 lbs. curb weight and in 4WD low range it seemed like it would pull anything I hooked to it. What a back saver!!
If there was any issue at all with the job, and I expected this, it was that the tractor left depressions in the lawn. So next trip to her house I'll take my lawn roller and smooth it all back out for her.
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