I drag an old heavy rear gate off of a flatbed trailer that I OVER built years ago. It is about 6-1/2' long and about 3' high. Has about five 1/4" wall angle welded interior to the end pieces, and each one acts as a little land leveler grader blade. [ It was made back when I was rebuilding tricycle John Deere's, in my foolish youth ] Welded some chain onto the end of it and pull it down my trails. Although it could be wider, the length tends to take off the high spots and fill in the low. I was going to take it to the local A&L scrap and get pennies on the dollar for it... but it has earned it's keep on my walking trails.