Clips to flat pedals, straps tightened only just so you can get the foot out in a hurry. That means that for a given set of shoes, the straps are "fixed", eg they don't see any adjustment until wearing another pair of shoes. Gives plenty of uplift potential if there is such a thing as useful uplift (no, I'm not trying to start a debate on that one, it's already been debated from here to kingdom come), and best of all, unvarying foot placement on the pedals.