I’m somewhat surprised by the fear of split ring wheels. I’ve broken down and put together more split rings than I care to think of. I use three wedges and a sledge hammer to service them. I’ll have to get some pictures, but I use three wedges that are only 4X4 angle iron 5/16” thick and 4” long. I place them along the bead, place my foot on one side of the angle iron and hit the other side. Just go in secession one, two, three, one, two, three till the bead breaks, then work around the wheel. I’ve never needed anything else.
Then I use a split ring tool to remove the ring.
To re-inflate I fill the tube with enough air to hold it in place till the tube protector is in. Then put the wheel back together.
The things I have found to be most important is not to mix and match wheels and rings.
Clean the wheel and ring of dirt and rust.
Make sure the split in the ring is opposite the valve stem and that the ring is properly seated in the groove.
Make sure that the valve stem core is out when first inflating a tire to seat the bead. In case one has to deflate the tire if there is a problem.
If a cage is not available, i.e., if on the road mount the wheel on the truck. By using duals and the rear axle the ring is between the tires.
And use a clip-on chuck with a long air line.