[quote=Dogboy]Angle iron and 2x4’s. Make some simple L brackets from the angle iron and use them to bolt the 2x4’s to the trailer frame. Thru bolt with 1/4” or 5/16” bolts. Bolt through the web of the trailer’s C channel, not through the flange. This way you won’t weaken the trailer.
You will want to make sure you have a nice sharp drill bit and use a center punch to locate the holes. It also helps to use a fairly powerful drill for drilling holes in steel. A corded 1/2 drill would be preferred and should go pretty quick. Use nyloc nuts on the bolts so they don’t loosen up.
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