I was at Perris for only a day of jumping when on vacation, and decided to stop in at the tunnel. After walking in and scheduling 10 mins with coaching at the front desk, I was up and getting briefed by an instructor in minutes. I was given great coaching and instruction, the coaches non-verbal cues and hand signals were excellent. He also lent me his own suction mount for my gopro when I told him I wanted to film my session. I'll definitely be going there again the next time I find myself skydiving in SoCal!