[KGIOR]

Are these the type that mount on the outside of a trailer frame? Most of them are to thin in my opinion, ours are all bent up from hooking straps or binders into them. They are also meant to have a heavy strap of flat stock mounted on the outside for a rub rail this also adds a lot of strength. Anyway uphill will be better but downhill will still probably be stronger then the pockets themselves. If you are putting on a strap
hold it down a bit from the top of the pocket so you have a small fillet weld instead of a butt of the two edges. Can't recommend settings though, the pocket will be much thinner then the trailer frame so concentrate most of the heat there and then wash it onto the pocket to prevent burn through. Also there is nothing wrong with setting up a few test pieces to get your settings correct before you weld on the real thing.

Ken