Don't know of any other tlbs' being available larger than the M59 at 59 hp. You might find an ag tractor that is larger with a hoe on the rear but doubt the hoe will be larger than the 12' hoe on the M59. Deere used to make the 210 with a hoe available but I think that was many many years ago and doubt it would measure up to the 110 or L45 offerings today.
The combination of the three, tractor loader and backhoe seems to be limited to large compacts. You can get the larger tractors or larger loaders or loader backhoes or larger excavators but not the combination of the three.
If anyone knows of a larger dedicated tlb with removable hoe and three point hitch I would like to be corrected. I would particularly like to know of any of these large tlb's that are within the $20,000 budget. Might buy it myself.
That would be the quickest way to take care of the problem IMO.
You might be able to find one of these older Bobcat TLB's in your price range.
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JCB makes a line of tractors in the size you are looking at but I"m not sure how the hoe attaches and if it can be removed easily. They come in several configurations including backhoe and box blade on the back
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I realize my price range limits what I might find. That is why I'm seeking input.
Stumps vary in size. I rented a 7,000 lb excavator to see what I could do with that and it left something to be desired. After a few I just drove around the larger pine stumps.
I think I could aggravate most of my stumps out with a mid size backhoe and if I owned it I wouldn't be pressed for time. I could always dig around the biguns and just burn them in place.
Excavators are too popular and pricey for me and then when you are done with what they will do you still need a tractor. A TLB would be the most versatile option I think.
No offense, but maybe you aren't profecient at digging out stumps. I have a 3 ton kubota mini ex and my son can't dig out a stump without clearing off a half acre. Me, you can hardly tell there is a hole left. Also, when digging stumps, use a ripper bar, much more concentrated force. It's definitely a learning curve. Good luck.