Free: Contests & Raffles.
The blinds in the fields were pulled about two years ago. I believe it's first come to use with layout blinds. The pits were a lot of fun, not sure on your second part.
If you have the map to the public land and a member of the "FHC" tries to tell you it's leased by them. Call the sheriff and report it as hunter harassment, let the president of the FHC explain to a judge why they would post or claim land that was not leased by them. Over the years I've heard way too many horror stories about about an unnamed hunting club doing things that cross the line.
Reservation systems suck for waterfowl! Get up early and get your spot...