Thumbs Way Up.
Lot's of discussions regarding technique, and drills on how to obtain it.
Though the guy drawing stick-women to illustrate complex concepts is back, there is plenty of footage to illustrate various ways to atttack after launching off the walls. There are drills, styles, even demonstrations of Misty Hyman's way of doing a "sideways" dolphin kick off the wall. I tried it today in workout and got farther away from the line than usual.)
Fins are shown, even the monofin which now I have to get, cords and such too.
This purchase was worth the $35.