honest,
Yes, but only incidentally. We have caught most while targeting resident silvers in fairly shallow waters (5-15') on incoming tides, although points like Pt No Pt or FW Bluff can produce early or late in the day too. But the few BM we do catch doing this are invariably undersize shakers.
A buddy and I like to cruise the shorelines and take turns rowing and casting to crusing pods of silvers that show themselves when there is no wind and conditions are right. We are generally using 8 wt rods with shooting heads, sinking leaders and either a simple shrimp or candlefish pattern. The silvers aren't picky and neither are the occasional cutty. One or two casts, at most, is all it takes. And that's about all you get till they show themselves again. We CNR only.
But catching serious blackmouth down deep is another matter. You'll need lead line with alot of backing and that just ain't flyfishing to me; at least it's certainly not my idea of fun. I know it is not orthodox flyfishing but when it comes to keeper BM, my idea is to hang a bug off the tail end of a flasher that's 90-150' deep. Casting and retreiving a downrigger ball all day still sounds alot easier than working a leaded fly line down where the big boys live. Heck why not just send your fly line and streamer down off a downrigger ball and call it good, even if you can't call it flyfishing?
But then if you're not hung up on keeper BM and you're dying to fly flog the salt, there is always plenty of entertainment to be had in the littoral zone and around piers and pilings. Besides the silvers and the occasional cutty, we have a gas catching flounder and some nice pile perch lately on flies (OK a drop of shrimp oil doesn't hurt either). Seems like I'm reverting back to childhood the older I get.
Tighter lines.