What part of Florida? What are the site conditions, such as soil and exposure? Is this close to salt water?

Cocoa beach (central florida). Very close- very Close to salt water. Soil is sandy.

What type of privacy - eye level or taller? Put another way, are you looking for privacy from ground level or from the neighbor’s two story house or an apartment house that is several stories or just a sense of enclosure? What size and distance; for just a patio or a whole yard, and how much planting room do ypu have? Are you looking for shade or just privacy? Would you consider structures such as fencing or a pergola as part of the solution. or does it have to be only plants? You may find that annual or perennial vines planted for fast coverage along with slower growing shrubs and trees make more sense than fast growing woody plants that are often more prone to storm damage and have a shorter life span.

The cliche that a picture is worth 1000 words applies. Can you take photos of the site, including some overviews and what you want privacy both for and from? And/or post your plot plan or a screen capture from Google satellite images? Without knowing more about the setting and goals, it is difficult to make suggestions that will solve the problem.