Ok, Here's what I did.
That little yellow piece under the locking side of the swing-out is nothing but a piece of what is called "UHMW" that I used, but you can use anything that will keep it level with your right hand swing-out bearing.
I counter-sunk 2 holes in it, drilled into the bumper and bought a couple of self-tapping bolts to hold it in place. There is still about 1/8" of space between it and the bottom of the swing-out. However the locking device is pretty secure and we had to do more mods to it because the latch didn't have a double-latch on it. It is secure
Next pic is the latching device. I went overboard on it because this jeep stays at the cabin and the roads and trails are all wash-board and or rougher. The padlock is not permanent will use a pin like the ones that hold your trailer ball in.
Right side of the swing out. I bought the swing-out bearing from AtoZ and it is strong but would not be strong enough with the weight and all the pounding without support from the left side. Notice the wing nuts on my jack. I replaced that with locking nuts as I mentioned earlier. Also notice that I welded a stop for the swing out because when I loaded it with tire, etc it swung around as far as it would go before hitting the corner of the jeep.
This pretty well shows you what I did and you can improve or design something that will just make it safe for you and save you from down-time when you're out enjoying your ride.