Free: Contests & Raffles.
My advice: Buy the BEST equipment you can afford (shotgun, waders, clothing, decoys, calls, etc). Hunting waterfall is a matter of lots of little things adding up to something magical. There is a lot of trial and error that can be eliminated with the right equipment, saves a lot of discomfort and frustration
Do your research and try to find someone on here to take you and show you the ropes. It worked for me last year I made a some trips with a couple different members on here and learned a lot from them. Hopefully I can hook up with them again this year and maybe a some other people from the forum to hunt with this year. I still got a lot to learn