Land leveler with rippers or box scraper

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A 15,000 lb. tractor should work for a 14' lpgs.

I'd imagine so. In your profile I didn't see anything that big.

I would think a 2x10 added to your existing skids should work long enough to smooth a few acres.

That's what I was thinking. I only have about 6 minutes on my LPGS so far, so I'll see what I can do before I get that drastic. =)