Free: Contests & Raffles.
Nothing better than sucker meat (cut bait). They devour it. But, you gotta catch/shoot a sucker. We used to shoot them with our bows in the creeks/off the train trestles.Always had luck with chicken liver as well. I miss catfishing on the Snake.
It depends on the place really. Some waters worms outfish liver. Other waters liver outfishes worms. Others minnows. Bring multiple rods and baits. I have never fished Idaho for catfish so I couldn't tell you about that spot, but you are aloud multiple rods there so try a few different things.