Hull Protection?

Does anyone else have problems with rock chips on the front of their hulls? I am trying to figure out what I can do to protect the hull from rocks chipping it while it is being towed. I already got the giant RV style mud flaps for my truck but stray rocks still seem to find their way to the gel coat. Does anyone have any other suggestions? I have seen some products out there, ranging from a boat bra style canvas that is strapped on to the front of the boat to a protective film that is stuck onto the gel coat. I'd like to hear what others have to say from experience. Any ideas, advice, or other input is appreciated. Thanks!