When fishing a stump don’t forget the root systems, which can run for several feet in all directions. Many times, especially on the edge of some deeper water, these will hold more fish than the main part of the stump.
Flipping and pitching, are successful shallow-water tactics, even in early season fishing. In flipping, I use only about 12 feet of line and 30 feet pitching.
It's best to pitch a worm underhand with a flip which is all done with the wrist. Use this method to get the lure back under docks and overhanging limbs in hot-weather fishing.