I use a pulley to raise my bag above the brew pot, and let the bag drain while bringing the wort to a boil. For most of the draining, I keep the bottom inch or so of the bag below the surface of the wort. After 10 minutes or so, I raise it just above the wort. I'm doing this to minimize splashing of 165 degree runnings. I know there's some disagreement about whether to worry about hot side aeration, but I'm curious. Does anyone else do this? Is 165 too cool to worry about HSA?