Depends on the specific use!backhoe is unweileding, adds twist and tortion to the frame, lower manouverabilty,as well as height restriction under trees, back 3 point ballast is no question the way to go.
I suppose if you have a gravel drive and need a box blade, you could use it to add weight. a BB1272 weighs 400 and three or four tubes of sand might give you 700 or so. Good Luck, LarryI just added a log grapple to my L3800. I know I need good ballast to move log length. I have rim guard in the rear tires. Now the choice is ballast box with sand or B77 Backhoe. I would assume the backhoe would be better but how are the ballast boxes? Today I moved a large round to try out the grapple but the snow blower was not enough weight and the rear tires were spinning in sand.
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Same, box blade or flail mower. 60 gallon air compressor tank failed on me & now has a 3pt mount & is full of old brake drums, concrete & sand. More compact than any other implement I own. No clue on the weight but it's heavy. It's sat for years untouched now. It works great, but why bother removing a heavy implement to put it on? I just deal with a big implement on the back & being a hair less maneuverable.I built a ballast box but never use it. I'd rather have a useful implement on the back so it's usually a scraper or bb.