That video is AWESONE!!
I grew up on a lake that didn't allow a course. In high school and college my friends and I would pile into my boat in the evening (they would have it gassed, blower on, lowered into the water, cooler full of beer so after getting off work I would literally turn off my car, put on my suit, and have the boat in gear in about 3 mins).
We would ski until 30(ish) mins after sunset, trying to make the biggest spray, get our elbows closest to the water, and ski the longest. We didn't know anything about form, it was all just trial and error.
Then we'djust hang out on the boat drinking beer until it was dark. Then we'd slow motor home and go out to beach parties...repeat.
Now I get up at 0-dark 30 to ski and head out with my 18 yr old son and a couple of great guys who are form technical insistent. I have learned more from them this season than all 40-some years of skiing.
Other than that my DD Malibu spends more motor hours doing Margarita sunset cruises with my wife. That never gets old!!