I already have a 'Time to be considered at a Place (in Minutes)' setup to hopefully compensate for that. So someone would have to be at a place for '5' minutes (or whatever you set it to) to be considered there. And if the person enters the area and leaves the area within the 5 minutes, no action is taken.
You sir...are a thinker! I am surprised other location services haven't thought about the dual circle model. It's very easy to understand and setup. Webcore nailed their presence sensor and I've been spoiled ever since.