I somewhat echo the thoughts of others on Tubes. I dislike them pretty much all the time. They are a pain to inflate, store, use, and pose a plethora of safety issues. Some you can control (speed, aggressiveness of ride, and other can't control (head butts, people trying to stand on them, etc). Overall my 8yr old doesn't like them, and I'm completely OK with that.
When the cousins or nieces/nephews are around I end up blowing it up and towing it around anyway. We use a 60' rope, and attach it to the ski eye on the stern MOST times. Sometimes we complaints of spray from the tower. This isn't a great tow point because as the boat pitches fore and after over other wakes/waves, the pull force varies and leads to sudden jerks on the line. The stern has a much more consistent pull force associated with it.
Jet boat has required a bit of adjustment of technique to make the "swing out of the wake" maneuver happen. Run at speed (20-22ish), turn, accelerate straight back to speed, turn back to original course, accelerate back to speed. Lather, Rinse, Repeat.
I wonder what kind of surface speed can be generated with a "pendulum" swing. I need to go do some math.