Arrived at the Gulf National Shores and parked in the first PUBLIC Parking lot off of Sand Key Drive at 0530 this a.m. I was at the high water mark with poles, sand spikes, umbrella and chair. About one hour later I was harassed by a young female wannabe "Security Guard" from the Sand Key Condo's asking me if I lived there and where did I live. She stated I I wasn't allowed to be there. I informed her I was on federal property and that she had no authority. She accused me of "camping" on the beach. Just ludicrous. There are all of these new "Private Property" signs up and down the beach that weren't there last year. I was nowhere near the property lines. Several other fisherman arrived later and where accosted by another female wannabe/ "Security Guard." I did a quick Google search and found a regulation that stated that access is granted to the general public "within 100 yards of the low water mark." Has anyone else experienced this harassment? Are there other regulations that I'm unaware of?