No, I'm not an instructor, so that would be illegal.You mean the kid in the video is your daugher? and I guess you're the pilot then.
In the UK renting a glider costs around £25 per hour, including instruction. Plus one day doing whatever is needed to get the gliders in the air, e.g. getting them out, moving around the airfield, wing running, retrieving them from where they have landed, hooking onto the cable and launching, etcJust how much on average does it cost to fly one of those things? Assuming it's rented.