I do what I was first taught:
- Ball in hand opposite the player. This is to prevent him taking the ball and in-bounding it.
- Raise the arm closest to the in-bounder.
- Pass him the ball (yes, across the body) if on the FC end line or if there's pressure when anywhere else on the court. Bounce otherwise.
- Count with further arm.
- Chop in time when legally touched in-bounds.
- Use raised arm for a count if needed.