No doubt that a few can be caught, and the possibility of stumbling onto a school of decent ones always exists, BUT I doubt you'll have anything resembling a "good pattern" on 11in.+ crappie until later in the Fall, and it will likely be a "mouth of the coves Dock-Shooting pattern".
Until then you're just gonna have to settle for stragglers....of which you can still come up with enough to stink up some grease if you're ambitious enough to keep hammering away for them.
Myself, I'll just wait until they get into an easier to catch mood.