Absolutely! Hand signals are definitely something we can build into Willow’s training, and dogs can actually become very responsive to visual cues. While you've lost your voice, I’d grab a clicker. Think of the click exactly like our verbal “YES” marker — click the moment Willow gives you the behaviour you want, then follow it with her reward. For cues she already understands, you can start pairing a simple hand signal with the behaviour too. Over time, the hand signal itself can become the cue. Just remember the clicker replaces the marker, not the command. So for now you can use your body language/hand signal to ask for the behaviour → CLICK when she gets it right → reward. This is actually a great opportunity to start building Willow's non-verbal communication skills!