I typically move my UL IVO IFA pitch from flattest pitch to most pitch at least a few times every time I fly my Kitfox. I also keep my aircraft in a hangar, but fly off water as well as runways. My tapes usually never make a hundred hours, even after sending the prop in to IVO for blade refinish with new tape.
Plus, they (and I) even super glue the edges of the tape AND cut the tapes in three places in an effort to minimize twisting on the full length of the tape. But even with all that I don't get much life out of the tape.
I wish I had your luck...or your secret![]()