I use the Super Float SF-225W. This is a styrofoam red/white bobber about he size of an egg, with about a 4 inch hollow plastic shaft. I remove the weight typically attached at the bottom so the bobber has almost no weight. This bobber sits vertically when fishing, and is very sensitive to anything going on at your hook end. It works better than a round bobber, which sits the same way on the water wheter your hook is on the bottom or off to the side or whatever. Any tilt in the bobber's action tells you someting. For steelhead, I jam a twig or toothpick into the tube and cast weighted marabou jigs. For salmon, I setup it up for sliding to the predetermined depth using a bobber stopper on the line.

It's colors might spook fish, but that's a risk I'm taking in order to use the best bobber I've found. If it came in *clear* finish, it would be perfect.