There used to be 2 charters running people out to the flats on the hour all season long.
When the old Southway channel closed up, the flats fishery collapsed and now it's rare to see anyone out there. The seals and general population decline pushed it over the edge, but it was the lack of any "cross current" that kept the fish off the flats.
One of the better guides out there posts here sometimes. Maybe he'll chime in with an opinion.
Not that the seals aren't a problem..