So I saw mention of using eye bolts for tie downs and I would strongly recommend against this if you’re intending to use hardware store eye bolts, they aren’t truly load rated. Rated eye bolts are more expensive, and I never much liked eyes sticking out potentially in the way. Much better to use D-rings for tie-downs, they lay flat when not in use, TSC and other places have them, and they are load rated. I bought some 3/8” weld on rings and there is 7 welded on the little trailer, three across the front, one on each side in the middle, one in each back corner, and I welded nuts in place to bolt one in the center of the rear (that way a mower deck doesn’t have anything to catch on but the ring can be bolted I place quickly if needed). I also put stake pockets around the edge and with the way the C channel frame is, I can hook there too.