Hey Doc,I don't know about Table Rock,but I live on the north side of Mark Twain Lake in north Mo. and the catfishing is fantastic. If you want to have a good time,just wait for a good rain to get the creeks running hard,and the catfish go on a feeding frenzy,most of the time you only want to have one line baited in the water,otherwise you can lose you rods and reels,trust me I have lost some.
If you like to do the set lines,the end of May is normaly good. I have caught several Flathead and Blues in the 20lb. to 45lb.range.