So there are many ways to do it I’m sure but this is how I go about it.
1. Map study at home or work if you have a bunch of free time?. You have to use every resource available. Paper maps, google earth, navionics, lake master mapping, and probably most importantly A historical map of the lake before it was built. You need to map out and make a plan before ever hooking up the trailer.
2. Read, read, read. There are articles on both Toledo and Rayburn and really any lake you intend to fish. That tell were why and how people catch fish consistently on both. (I know you didn’t ask about this but I feel like people don’t think about it and it gives good historical base of where to start at certain times of the year).
3. Once I’m on the lake and I Have a plan what I normally do is get on the major creek and using the map study I have done I will use side imaging and scan where I have already identified on a map where a ditch or smaller creek meets the major creek. Once I have found it simply follow it from there. Also if I’m in a shallow situation I look to the land around it. Water will drain into the lake, there is your ditch/drain.
This is a map that I started on and haven’t had a chance to finish.
I’m sure some of you know where this is just by looking at it.