My trailer got bent over time maybe from not using the legs while loading from the beavertail or maybe just overloaded. The plan was to set a ground anchor to pull against to straighten the frame and to use stuff I already had to make it
Both sides were bent...
The ground anchor was made of half a barbell bar, a thick plate, a weight, a saw blade, and a frying pan
Put in as deep as the three point digger would go. Placed inside curve of driveway so there was a good place to jack against
About 40 inches deep. I figured to bury the chain to keep it out of the mower and that way could be used again if it was dug up.
Used tractor boom pole to pull against. Cut holes in the fenders to get a pull at the crown of the bend.
Plates to keep from kinking the frame.
Pulling spot.... The anchor started to pull out of the ground as I had only left it in a month or so. Need to wait until the ground freezes then it will be stuck good.
After the ground froze the anchor held. Good blocking and a three ton floor jack bent it back straight. Took a few times to bend and check to see where it ended up after relaxing the pull. Trailer is a 20 footer so it gets lots of leverage this way.
It took about 2 1/2 inches past straight to get it straight when relaxed. Here you can see the bow while rebending. The fenders didn't like this much and made noises.