Try to find the river channel, if you head out from the little platform by the first turn in head out about 30-40 yds and you should find it. The south end of the lake is mostly shallow, 5 ft or less. The channel will be about 15 ft deep. A word of caution though, your auger will pretty much be worth less after drilling holes up there. The sand from I-70 blows onto the lake and dulls your blades really quick. You could drive an extra 20 mins and fish the snake river inlet at dillon. Just wondering whats wrong with by the bridge?
Any small jigs with a wax worm or two should do the trick with bait. Pinch the head off and squeeze a little of the juice out. If you are in an ice hut you can watch the small stockers swarm the bait when that juice spreads out.