Having the right equipment will help you score bigger bass. Opt for stouter jigging rods than you use for panfish, or tip-ups that set the hook for you. Slightly bigger live baits, and tubes instead of small metals, up the chances of enticing the toads. Portable electronics work well for finding defined grass lines or points extending to deep water, and some good ice bass fishermen I know search by using a "V" pattern of holes that extends out over the span of shallow grass and into deeper water. Ultimately, some of the best feedback comes from what you pull up from the bottom. For analyzation purposes, it's wise to initially drop something like a Rapala jigging minnow or a jigging spoon down to probe for vegetation before deploying tip-ups. If you find some, set your leader length so that your bait suspends slightly above the grass. Remember, drilling holes creates quite a ruckus for shallow ice grass bass, so let the holes rest for a while before dropping in.