Your right, they keep little pieces of land secret for a while. I don't know why, but they do. But, when someone find out, boy look out. Everyone is there. I know a guy in FG&W so I hear maybe a little sooner then everyone else, not much though.
Heck...sometimes I walk around a WMA and all of a sudden come across random No Treaspassing signs. Or even better... No Teaspassing signs left over from the previous owner/leaser BEFORE the state bought it.... and those guys still think that they own it.
Yeah, and then the guys who will post some public land in an effort to thwart others. Trying to make their own little hideaway they are. Laughing. I see it every year. I had a guy try and post my land. Asked him if he knew what rocks salt was. He removed his trash from my trees and the staples as well.