Free: Contests & Raffles.
The idea that beaver stop salmon is laughable. Every friggin salmon stream in the world has or has had beaver in it. Every. Single. One. It's a non-issue.
I was known as the beaver slayer in my younger years, but due to that pesky marriage I signed onto I will need to sit this one out.
I've personally witnessed on several occasions salmon failing to get over a dam, absolutely impassable.