A roll of dayglo orange tape, say 50 feet long should be attached to the CVR and FDR so that it will unfurl and make them easier to find."
I think it's an excellent idea, and you are not the first one on the various AF447 threads to suggest it. And neither was I...
I wonder if tapes might, for example, impede the recorders escaping the fuselage (by snagging on things) where they might otherwise escape & hence make them more susceptible to fire damage? It's such an obvious idea, I kind of wonder if they haven't already considered and rejected it for some other reason?