Im having a problem finding big blues in some of the rivers i fish. there all tidal and i usually fish about 10 miles up river from the inlet. its winter here but the water has warmed up to and holding steady at 50 degrees. the deepest holes i have found is 40 ft with the average being 30. these holes are few and far between and i have fished them without any luck. For bait i use gizzard shad, eels, cut bream, and rarelt shrimp. when the water is on drop the river can have swift current. I never have any luck fishing when the water is coming back in either.