Have to disagree. In any form of work, locum or staff, you have to go to where the vacancies exist, if you want to work. It’s good advice.
It’s a known fact that the areas of the country near Optometry Schools are overstaffed wth Optoms because as students they met a local partner and decided to stay with them.
I had a friend, who sadly recently died, used to take his caravan when he was locumming and saw a lot of the country.