Tip-Up-Town is fun but there is FAR better ice fishing to be had closer to this area. The "event" on Houghton Lake is a "tourist" thing, the fishing on that lake is not nearly as good as it once was years ago. Invasive plants, primarily Eurasian milfoil, did a number on the lake. The State did a lot to kill them off but it is going to take years for the native vegetation to return, and the fishing will be spotty until the lake recovers.
They are STILL trying to control the weed and the argument is whether or not to do entire lake treatment or "spot" treatment. Ecologically speaking, the opening of the Welland Canal and the St. Lawrence Seaway has been a disaster on the Great Lakes and Michigan in particular. As long as the Lakes are open to ocean going vessels the damage will continue. It is unlikely that anything will ever be done. We will be fighting a never ending battle in an attempt to keep the area healthy.