Yes, below body lines is a big give-away. Anytime someone uses a ball hammer, there will be tool marks (tiny circles) in the center of the dent. Or anytime the paint is broken in the center of the dent is a big sign. Another common thing is to take a real piece of hail and put it in a sock, then walk around the car beating it up. What they don't realize is it will leave tiny grids in the paint from the cotton. It basically brands the car everywhere it's hits. It's really suttle, but you can see the fabric lines. If they hit chrome like on a grill or belt molding, it will be obvious. Fabric patterns in chrome show up nice in pics too. I've saved a bunch on my work computer. We generally get multiple huge hail storms per year in Oklahoma. I love the overtime.