Again with the name calling. Why can't anyone have a conversation without resorting to ad hominem attacks?
Isn't the sign a way of the owner telling you to leave?
Let me use Texas Law* as an example:
A CHL commits a trespass under §30.06 if (1) the CHL carries a handgun on property of another without "effective" consent and (2) the CHL receives notice that entry on the property by the CHL with a concealed handgun is forbidden or (3) the CHL receives notice that remaining on the property with a concealed handgun is forbidden and the CHL fails to depart.
The real problem is what it means to receive "notice."
Notice can be oral or written. The statute provides no magic words necessary to receive oral notice. If either the owner, or someone with apparent authority to act for the owner, tells a CHL to leave, the CHL must leave. Period. Of course, if the CHL is truly concealing the handgun, it will be rare indeed that the CHL will receive oral notice to leave.
The more common situation the CHL will face is a sign that attempts to give the CHL "written communication" that the CHL is not welcome if the CHL is carrying concealed.
If the property owner (or someone with apparent authority to act for the owner) posts a sign, the sign must comply with the requirements of §30.06 to be effective notice to a CHL.
"Written communication" means either:
(1) a card or "other document" that has written language "identical" to the following:
"Pursuant to Section 30.06, Penal Code (trespass by holder of license to carry a concealed handgun), a person licensed under Subchapter H, Chapter 411, Government Code (concealed handgun law), may not enter this property with a concealed handgun;" or
(2) A sign posted on the property that:
(a) "includes" the above language in both English and Spanish;
(b) appears in contrasting colors with block letters at least one inch in height; and
(c) is displayed in a conspicuous manner clearly visible to the public.
Thus, according to the statute, a proper §30.06 sign must have language identical to that quoted above, and the sign must be in both English and Spanish. The letters on the sign must be block letters and they must be at least one inch in height. They must also be of "contrasting colors." Lastly, the sign must be displayed in a conspicuous manner clearly visible to the public. Anything less is not "notice."
* I use Texas law because there is no Florida case law on the subject. I could not find ONE single case where a conditional trespass sign carried the weight of law.