I still think we should handwave the System, since...well, that's not really the focus, is it? It would slow it down with stats and skill rolls and whatever, so we could instead just say that the DM says "Roll Perception" and then roll a dice behind the scenes and just take the d20 result as an indication of how well they did without worrying about stats and attack rolls and whatnot. If we add a system in and follow it to the letter, we're just bogging everything down when really, the system isn't why we're here xD