I worry about the ESC overheating if I seal it up too much. My Super Dragon with a Castle Creations ESC, that sealed in the fuse with no air flow, is running at around 145f during medium aerobatic flight.
I have flipped the Tundra too, and flooded the ESC, the motor wouldn't even turn until the ESC dried out. I probably should soak it down with CX as that ESC isn't sealed up very good.