Nate, I agree with you about the mung, some days nothing gets though it.
My interest in weed guards is for a pond loaded with lilly pads and grass. I'd like to be able to quietly pull a fly onto a pad and then drop it back into the water. The bass and pickerel in this particular pond respond to a retrieve like this. With spinning tackle I'd just Texas rig a sluggo or plastic worm, but I want to use the fly rod.