They are "riding the wave" as many communities are having or had Koman races and events.
Just like the spike of police/fire scam calls around 9/11. These scammers really deserve a very sound thrashing. But we'll get back at them by shutting them down by not answering and blocking their calls.
they always call before 9 AM here (I'm in Florida too), never leave a message, I refuse to get out of bed while I'm sick just to answer the phone that might or might not (More likely NOT) be for a job application follow-up. If it's an employer, they leave a message and I return it when I wake up and eat!