I think a signal or sign of some kind would be great when in public, that way we know who is looking too. How about we hook our thumb in our jeans pocket? I'm going to give this a try and see if anyone picks up on it.
I've never tried that but sounds like a good idea; let us know if it works for you. 'Thump in back pocket" sounds like a good.
I will be visiting the Sarasota Florida area soon, so I'll put it to the test.