After reading through the game manual, I didn't see any mention of descoring being illegal. Specifically, can you flip a cap that has been scored on top of a pipe?
This Q&A is now read-only
Official Q&A: VRC 2018-2019: Turning Point
10: Descoring legal this year?
Answered by Game Design Committee
If there are no rules prohibiting something, this generally means that it is legal. There are no rules prohibiting flipping the orientation of a Cap which is High Scored on a Post, thus it is legal. (provided, of course, that rules such as SG4, SG8, SG10 etc are still followed)