A few weeks ago I set a trotline across a creek channel. (depth 24 ft.) No flatheads for the first two weeks then a 42 and 35 lb fish within a week. Moving up the creek I set 3 more 8 - 10 hook lines and caught a dozen fish in a two week period from 25 - 55 lbs.(depth 6-16ft) Just as quickly as they started the bigger fish stopped biting and now all the fish caught are 8 -12 lbs. Question, have the fish moved even shallower or have they left to find their spawning areas now? This is the first year that I have attempted to catch flatheads out of a lake and have done much better than I did some 15 years ago in the rivers before I began to jug fish for bluecat. During this time span I also caught two blues that went 37 and 48 lbs. I would appreciate any suggestions as to where to find the bigger flatheads during the month of May.