On a surface interval while diving Sombrero reef off Marathon last summer when a flats fishing boat pulled up, put two snorkelers in the water behind the boat on drag lines and the Captain used his electric trolling motor to pull the snorkelers across the reef at a very slow speed. I thought that was pretty cool. But a commercial dive boat Captain got pissed about it and yelled at them that what they were doing wasn't allowed or not legal. Can't remember what he hollered. I've given this a lot of thought and can't figure out why the Commercial Captain was so adamant about this. Can you good people help me out here?