I'd like to tap into the collective wisdom of this board once again.

If you're trying to maximize your time in the SKL (because, e.g., you're trying hard not to be tempted by the dutyfree shopping outside), do you have a rule of thumb for when you leave, so that you don't end up waiting in the post-security screening area for too long? (I nearly always get guiled into rushing off too early and panting as I wait, exasperated, for boarding to begin.)