I have been fishing for several years on the lower, tidal reaches of the Edisto and the Santee Rivers and I'm doing pretty well on the flatheads (average about 5 flatheads per night, genearlly with at least a 20, couple of 40+ pound fish per season). The Edisto down there is about 50 to 75 yards wide (75 to 100 yards wide for the Santee) and the depths are like 5 feet on the flats with holes to 15 on the Edisto and some 30 foot holes on the Santee. Lat two years I have tried a few trips to the upper Edisto, probably 60 miles upstream from the area I usually fish. The river up there is maybe 40 to 70 feet wide and ranges in depth from shoals that wont' float a jonboat to 15 foot holes on the sharp bends. The current up there also tends to run pretty fast, except during thelowest water of summer. The thing is, I have only managed to catch a couple of small (5 pounds or less) flatheads in the upper river, and most trips I have caught none. Are there any secrets to fishing small rivers for flatheads? I've tried the holes, eddies, runs, etc. Are small river fish more likely to feed at a different time of the day or night, or in any paricular type of habitat? I'd really appreciate any advice anyone can offer.