I will say this only once. There is such a thing as the Law of Unintended Consequences. Any course of action that you undertake can produce consequences for which you were not prepared and which are, very often, antithetical to what you hoped to accomplished.
In the case of open carry, it is allowed under state law for the protection of hunters, fishermen and campers who might need a firearm for protection in the wild, far from civilization. It was not designed to allow carte blanche firearms carry in, or near, towns and cities. Now, just so you understand, you do not have a Right to carry a firearm. You have the PERMISSION of the state to carry a firearm under certain conditions. That permission can be revoked at the whim of the legislature at any time. At the moment, the legislature has no reason to revoke the open carry law in Florida. Giving them a reason might work against your stated goals. Unless, of course, your goal is either to have the open carry law rescinded or to provoke conflict with authority for the sake of conflict.
I do not find it unusual that law enforcement officers working suburban or urban areas would not be aware of the law. There is usually no hunting allowed in these areas, camping is usually done in back yards and parks and there is a significant lack of snakes, bears and pumas on the Melbourne or Jacksonville piers. In other words, none of the circumstances that make open carry of a firearm desirable in the wild while pursuing outdoor activities is present where you want to carry your firearm. If you abuse a law, you can lose it.
If you want to change the law to allow open carry anywhere, that is another story. That will only happen if you can convince enough of the citizenry to accept open carry. I do not think that sticking your finger in the eye of law enforcement is going to achieve that goal. Quite the opposite.
I'll say no more on this. I think the reasons for your actions are clear. I just hope that your actions do not bring about negative results. Personally I already have my permission from the state to carry most places, including while hunting, fishing and camping; even on the pier. So knock yourself out.