Bob….so, those ziptie stiffeners are providing enough tension for you to use one corner with one hand? I like the concept…but even with full length stiffeners, I’m having a hard time seeing two zip ties providing enough tension on the fabric to allow one handed operation…especially b/c of the waterproof zippers.
I am trying some experimenting now…first, I tried a piece of cardboard, that had a folded over lip at the top. Again, just an experiment…I don’t like the idea of bringing cardboard anywhere…

This actually worked pretty good. So basically….when I pull a zipper, the fabric has to “pull back” in the opposite direction to get one handed operation …which the cardboard allows. Just like this….the pocket actually works pretty well.
Of course…I don’t want a cardboard flap. So I cut the flap off so it was basically just a plan flat piece of cardboard….and it didn’t work so well. However….I then used the grosgrain loop at both ends of the zipper, and tied that to the grosgrain of the hipbelt (various loops there), and both together, actually works great ->


But again…take away the cardboard…then not so great.
I’m thinking that if I just had a rod, installed at the top of the pocket, close to the hipbelt, that it would give me the same kind of tension like the cardboard. More experimenting needed!
And…a tip…I’m going to be removing the thin drawcord line and put glowire on….those thin drawcords start killing your hand.