I am a cat lover, but will add my 2 cents. Florida has leash laws, please understand these. You can get an invisible fence which will probably keep your dogs in BUT it will NOT keep predators out, and yes we have predators. A CYV might work, but you need to be aware of the property lines and the neighbor's access to their property. We also have large birds of prey you will need to be concerned about.
I will now turn this over to all of the dog lovers, but please be careful with your fur babies.
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Pennsylvania, for 60+ years, most recently, Allentown, now TV. 
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