I think what Snagly is refering to as "yarn balls" are actually what we know as "Glo-bugs. I've always had good luck with prawn
& tube tied candle fish imitations. They are
used to feeding on these baits in the salt &
will continue to feed on them into the rivers
& work especially well from the shore in the
bays. Find any good point of land in a bay & fish the incoming tides. Hope this helps. DryFli