Okay boys, I got me a bare bones trailer here. Used to be an old enclosed trailer for a roach coach kind of thing, IIRC.Father in law was not using it, so we tore it all down to the frame. Its rusted up, and the dovetail welds are separating from the frame rails. Trailer tongue hitch says its rated for 5k pounds. It will probably need new trailer brakes. Has not been used in a loooong time.Ultimately, I wan't to convert it over to a firewood trailer, if possible. If not, maybe make it an utility trailer?Before I can go ahead with doing anything, I was hoping someone on here would be able to help me out on picking out what kind of steel to go with. Its gonna need to be beefed up more if I wanna put some weight to it. May even have a tandem axle setup with springs if need be.The frame is currently comprised of 4" U-Channel with 1 5/8" inch legs. U-channel is 5/16's thick.Frame width is 5ft and length from tongue to end of frame is like 15 feet.I want to make it a total of 8ft wide and maybe shorten it or keep it at its current length.Anyone have any ideas to help add structural ridigity? If I add in steel pieces to make it 8ft wide, that adds in strength, but it will still be able to bend lengthwise. Should I plate the U-channel, make it a boxed frame, etc?Just wanna bounce ideas off you guys here. Trying to get a feel of whether or not it would be worth bulding up for a firewood trailer or just buying one considering how much may be needed to make it hauling worthy. If not, That would force me to make it a utility trailer...

most likely, the single axle is either a 3500# axle, or a 5000# axle (3500# usually 5x4.5 bolt pattern, 5000# axle has 6 or 8 lug..)Outside of that, I can't really recommend/help any with the specifics of building/modifying one..