Of course, protective covers are one of the staples. My most recent order from Bruce's Custom Covers (they seem to last about five or six years between replacements) included protective sleeves for my V-tail Bonanza's sensitive butterfly ruddervators. I explored the idea of wing covers, but decided against them. For early morning departures when frost is a concern, I can usually prevail on my home FBO for overnight hangar storage. On other days, I just make sure to scrape all the frost from the wings before I go fly. And for me, I need to be sure to drain my ailerons after a rain, before the mercury drops and the water inside freezes. I've never heard of an incident involving flutter caused by ice-imbalanced ailerons, but I'd just as soon not take that chance.