Jobs at small Tampa companies nobody posts about after 5 years as a janitorial supervisor

I asked around at a community meeting and got three leads. I am in Tampa, in case local advice matters. They like a brief email with a résumé. Does anyone have similar leads?

Visiting in person worked for a trades job. For office jobs, email was better.

Keep everything in writing and save the confirmation numbers. It made the follow-up calls so much easier.