My Dad served with the Hillsborough County Sheriff's Department from about 1975 to the early 1980s. Most of the time he was in charge of the boat patrol and some school resourcing, although he did stints on the road and in the jail (for a year, I think). 1976 seems to early for him to have been on the boat, but it is possible. He was the oldest member of his class, and the best shot in the class.
Forgive the slightly stained photograph here of my Dad in his HCS whites from 1980.