Fishing big streamers from a boat is one of my favorites. When everyone else is complaining about the water releases that is when I like to be out there.
Don't be afraid to go BIG. I will throw flies up to 8/0 for trout. I am boatless at the moment but hope to be getting another soon. I'll get in touch if you'd like to get out there with me some. Nothing like getting the interest of some of the biggest fish in the river. It's not for everybody because it requires a higher skill level. Glad to meet a couple of fellars that like it!