Tufo Tape
Tufo tape holds strong. When I tape a tire on, I leave approximately one inch of the rim opposite the valve stem without Tufo tape. I carry a small slotted screwdriver in my tire sock. On the very rare occasion where I needed to change a tubular on the road (once in the last 5 years and I ride around 5,000 miles a year), I use the screwdriver to help get the tire started for removal. Once you get a little bit of tire peeled off it is easy to remove it the rest of the way.
Back in the day, I used Wolber tubular glue and never had a tire roll off, but there are more steps to mounting a tubular with glue. I find that Tufo tape makes mounting and running tubulars much quicker and easier. Plus, as I mentioned in my earlier post, tire sealant takes the fear out of having to throw away a tire with a minor puncture. I have been getting an easy 1,000 mile plus out of Veloflex tubulars used on the rear wheel. Of course, YMMV.