SlickHunter: I play CC custom courses with passes. Every pass I use, I make 5k XP. I do that 10x, that’s 50k XP a day, it’s a grind.
But you should get those XPs even if you weren't using the pass. The only thing the pass does is add the points to your CC.
While I haven't take advantage of the custom course glitch in quite some, when I dd, I never had to use a pass to get the extra XPs generated by that particular glitch.