Agree with LedHed, dark natural buggy ties are a good foundation. I also find light color minnow ties useful especially in larger sizes.
1/32 #8 with a casting float
1/16 #6 on 4# mono
1/8 #4 or #2 for bigger fish in rivers, say 15"+. I like braid & heavy wire hooks for this application.
If you're fishing for lakers, well, thats a whole different ball game.
Haven't fished the park yet, but pretty sure Yellowstone is lead free. Its possible the rivers might be too choked with broken weeds to jig fish, in which case float-fly or hard wobbling crank like HD Trout MIGHT offer a marginal window. A single double hook on the tail works better for me than stock twin trebles on a crank. Or, theres always the lakes.