When looking for a pop-up canopy, it’s important to consider what you will be doing, and how many people it needs to shelter. Will you be sitting or laying down? Do you need extra space for tables, chairs or coolers? A good rule of thumb is 10 to 20 square feet of covered space per person, depending on how much room you need to relax comfortably. For example, an 8-by-8 canopy can reasonably accommodate 4 to 6 people and some personal items.