1) get another number from an app like hushed.
2) get whatsapp business. It is just like whatsapp, but it is a second account. Join it with your hushed number. No one on whatsapp can tell that it is not the normal app.
3) Now you have two whatsapp's. One for punting, one for RL. Only one phone. So no playing Doctor Foster guy and hiding it in your boot.