Might be easier to just paint the loiterable zone a different color, maybe with little bullseyes for the widest, driest spots to plant your butt. Not these metal markers that might trip somebody.

In a few years there'll be tiny, stinging drones to police this, we just have to figure out what to do until then.

Is it just me, or do these things look like the back end of a bullet?

@tommyspoon: Shhhhhhhh. That's "Phase 2."