i agree with rome, slip bobbers are the way to go , i catch lots of kokanee this way up in granby , slip bobbers are great , you can set your on depth , i like using ice jigs with minows , and hot pink jigs for kokes
I use mainly the slip bobbers since they are more versitale as far as depth goes but the clip on bobbers are easier to rig quickly if you only plan on fishing a few feet below the surface. I just tend to stay away from the "beach ball" bobbers.
I think roth nailed it on the head. Slip bobbers are better for depth, clip on bobbers are better for convenience. If your out fishing at sunset and all of a sudden you see rings at the surface everywhere, a clip on bobber is sure nice to have unless you already have a pole that is just laying there rigged for the slip float.
Slip bobber rule! I have been using the Thill Nite Brite ones almost exclusively, day or night. They have them at Walmart, red or green light. Red is a buck cheaper and I think is easier to see at night.
The only "pain" i have with slip bobbers is having to cut everything off to get the float off and then retie (lets say i wanted to just fish a jig and grub instead of floating it). But, i have seen a slip float that has a cut all the way down it, in a spiral form, so that you can get the float on and off your line without having to cut anything. If i find the picture, i'll post it. Its hard to explain.
Thanks to everyone who replied to my reguest in regard to rigging a slip bobber. Tried a slip bobber today at a local pond. The system functioned perfectly. I have one suggestion. I tied the bobber stop knot with a uni-knot and 8 pound mono. The uni-knot allows as many wraps around the active line as is necessary to prevent undesired slipping. The uni-knot is very functional and an easy tie.