I do not have any specific coverage when I am gone (which, because of finances is less and less). Sometimes a patient gets mad and I reply (stealing this from Tom of the Bob and Tom Team), "I don't know about you but there are two people in my life that I want to be fully rested and focused on their job...my airline pilot and my doctor". Most seem to understand that we all need to take time to clear the cobwebs out of our brains.