Wow, you must have been reading my mind. I have dreadful helmet hair. I had a pony tail until recently but got sick of the kink in my hair when I took it out.
So off to the hairdressers I went, "give me something slick, sophisticated and it must look good after my helmets off". Hmmmm, I now have a very slick style that needs "product", hair dryer, and straighteners. Now, if I was twenty that would not be a problem as I do own all of the above things but these days have no time to use them.
I've tried the skull cap, that helps keep everything in place but I still end up with bits sticking up in the oddest way. I'm now more earth mother in cycling kit rather than slick girl about town. Its very frustrating, my friends find it hysterical and shake their heads in despair. One kindly friend grabbed me yesterday and begged me to let her straighten my helmet hair.
So in answer to your question, the only thing that was reasonably ok, was the pony tail, otherwise its all off or short back and sides. If you find something else let me know.