Mount them at "return and buy better skis". jk.
If your not skiing 100% park i'd go like 1-2cm back from ski center. so like in between ski and boot center, thats were i'm mounting my s4's and i ski 50/50.
Wiley Miller: "Well skiing is kinda like partying, you swerve to and fro, hit shit, and sometimes you fall. You can be hurting the next day and say iíll never do that again, yet a few days later your back at the same stupid antics you were doing."