I don't like using quick strike rigs on tipups, I've found that it's just to much metal and the fish usually drop the rig once they feel it. Switch to a single trebal hook in size you would feel is to small. If you notice you are getting lots of flags but few hook ups downsize your bait and give the fish more time to turn the bait and swallow it. Something a few of my buddy's have been doing is using tube jigs tipped with a small piece of herring. The soft plastic helps hide the hook and cuts down on dropped baits. Don't overlook dead bait, pike are opportunistic and the less energy they can expend to catch their food the more likely they are to bite.