hmm.     Successful navigation through the gap is mandatory.    The width of the gap can be judged from a scale of 1-10, 10 being the narrowest.      The size of the fat and perceived danger can also be judged on a 1-10 scale.    Humming the first part of the indiana jones theme is the baseline. You can do it at any point up until you walk away, but you MUST at least do this, or it doesn't count. Points awarded for each additional triggering thing you say.  Good?  Yes?  No?  Suggestions/modifications?