John - isn't it nice to have a place where huge ocean bass roam on sugar sands smooth enough to drag flies in? Cape Cod coastal anglers are lucky for sure.
Another approach I use is to purposefully snap a backcast like a whip (but not too hard), which often throws the debris.
Some flies hold weed better than others, so I switch designs in weedy situations if it doesn't compromise the fishing.
If the weed is laying on the bottom, I use a line that will keep me above it; if it's running hard in the main current I'll sink the fly below it unless they're breaking when a popper would be a good choice.
There are different types of ocean weeds to deal with - fragments of leafy weeds and mung, which probably has a scientific name but the backside regulars will tell you it stands for "monkey dung". Looks just like it but twice as sticky. Thank goodness it doesn't smell like it too. Anyway it will cling to every blood knot and loop and shroud your best flies to look like a two pound poop.
Spring creeks have their autumn leaf-filled days, steelhead rivers have their glacial silt, bass ponds weed over in summer - the atlantic coastal fishery has it's burgundy brown nemesis - MUNG!
How about weedless FLIES????