I used two 3/8" grade eight bolts that were 4 1/2" long. I welded tabs across the heads with the intent to follow Muslhed's plan. This changed a little during the install.
The wing nut and pin thing works pretty well. The tab to hold the bolt head while tightening the wing nut is where I strayed. I wanted the wing nut and pin to be up. That way they do not take the abuse from brush and debris quite as bad. This is where I found that the tabs needed to be a little more finger friendly, so I twisted the ends.
I still need to repaint them after the "adjustment". I can get them pretty tight by holding the wing nut and twisting the bottom end. The longer tabs offer a little more leverage. Here they are installed-
For holding the sway bar up while disconnected. Those first gen tow hooks work great! The bar swings up just clearing them. All that was needed is to slip a cap over the tips and the sway bar can not swing down! I slipped a couple 1" long pieces of heater hose over the ends as a trial-
With both of them on there the bar will not pass. I stopped by the hardware store this evening and picked up a nice pair of 7/8" black rubber end caps. They look something like a furniture foot cap or crutch end cap. They do look much better. I'll probably throw the heater hose pieces in the tool box just in case.