So we all know river channels can be the key to crappie most of the year..My question is how do yall fish the river channel, or I guess how do you find it, diagnose where they are and everything else that pertains to it...Is the only viable way to find the river channel and follow it is by having a 1000dollar fishfinder and all the ho9tspots maps? without seeing the lake before it was flooded, my expertise and following and even finding the river channel is zilch..if they aint up in the brush or shallow where you expect em, i aint catchin em...just wonderin if any one has any pointers..