i also like using this method. i use a 2-3 foot leader and put a flourecent trout worm or grub and jig it back. the bubble sinks slower. and if you want to fish the top, just take out a little water. i also attach flies, and small rapalas to the long leader too, and with the water weight in the bubble, you can heave it out there. and if nothing is working, just add more water and use it as a sinker and add a worm or power bait. i pretty much keep one pole premenately rigged with a water bobber while fishing lakes from shore.