Florida hiring pains

Hi All, I recently purchased a koi pond and fountain business servicing luxury properties across Palm Beach County. Unfortunately, I inherited techs who've skipped 10 visits in the last two months and only want to work six hours a day, four days a week — meanwhile I'm turning away new work, missing billing and risk loosing customers. Needless to say, I'm looking to make changes. If anyone knows reliable people in the Palm Beach area who might be a good fit, I'd really appreciate a referral. I'm looking for someone who is dependable, willing to learn, has a clean driver's licence, and doesn't mind getting wet from time to time. I am paying above market to find the best people - $20/hr during probation, moving to $30/hr full-time once they're up to speed. Training, van, uniform, and tools all provided. Thanks in advance — any leads are appreciated. Cheers, Ben