I need your all help!! I fish a lake that holds a lot of blues. The blues are anywhere from 7 to 30 pounds. During the spring, it is easy to go out and catch 5 to 15 blues in a evening. Once the water gets to the temp. of upper 70's to lower 80's they leave the shallows and go some where. I have fished this lake for the last five years and seem to not be able to locate them in the summer. I tried to go deep, drifting and sitting but no luck. Not even one blue is caught during the summer. Please help!!!