Since I have put aside serious thoughts about competitive racing (several decades ago, in fact), I may no longer corner with quite the wild abandon of long-lost youth. This rationalization allows me one luxury that makes sew-up tire changes much easier. I don't claim to have invented it.*
When installing the tire on the rim, put a business card or the equivalent between tire and rim, at the spot just opposite the valve hole. After installing the tire, trim the card. What this does is kill the glue on about 3% of the circumference (1/36, 1/32). Makes it much easier to remove the tire. Heresy or not, I tend to slip an old style tire lever through the gap, lift the tire over the side, and voila the rest comes easily.
You might get the same effect by just not gluing one space between spoke holes, but this sure has been easier to remember, and works with Tufo tape. Why just opposite the valve hole? Just the easiest place to remember for me.
There are no guarantees that you won't kill yourself or your tire, but I'm still doing ok.
harvey sachs mcLean va *Plagiarism is theft from one source. Research is taking from 20 or more.