Depends. No, not the old folks underpants. It really depends upon how well you know the lake and how well you can keep your rig in the channel.
You can run all the way to right to the ramp at browns ford. I am not sure what the water level is now or was then but I do remember seeing bottom one winter right above the ramp. Water may have been super clear and it may have been 4' though. I'll run on plane in 3'. You may not want to though.