Free: Contests & Raffles.
If you cross a ditch and the water appears to be black, it is. The stench will eventually wear off when you throw the waders away.
Tide book is a must like mentioned but there are tons of public spots that are good with just waders. You'd also be hard pressed to beat a avery expandable decoy pole(it's nice to have an extra 10-16 feet). Drop me a PM and maybe we can catch a hunt.