The top of E4 (opposite E1A and even higher up) fishes well in medium and lower levels.
Fish it downstream with a float sink tip line or slower sinking line. One can wade the first part of the pool. There is a little shelter on the bank, drop in 20 meters upstream and cast out. There is a big rock just out front of the shelter, this is known to be a good holding spot. One can easily see that this is a good place for fish to pause and rest on their swim upriver. One can also try this rock spot in medium to high water. The rest of the stretch fishes better in lower water conditions; fish it most effectively with a sink tip line, Float Sink 3 or something similar all the way down.