If you must try to set the hook, let the line come tight first, and then pull to the side. The obvious places to fish jerk baits on the flats for snook are the cuts in the mangrove shoreline, oyster bars, and over grass. Snook hiding in the grass on an open flat are not there to relax. To enter that hazardous environment where they themselves could get eaten by a porpoise or a shark means they are hungry. I pay particular attention to large patches of grass near creek mouths, and gaps in the shoreline where the current flow will be exaggerated.
Redfish seem to prefer a mixture of sand patches and sea grass.
They are every bit as wary as snook, and may even be harder to entice with plastic. The fluorocarbon seems to be even more important with redfish, which paradoxically are not supposed to see as well. Can t prove it by me. Trout are most often found in the deeper water on the outside edge of the grass. The smaller fish don t seem to mess with the six-inch bait, which is fine by me.