OK, so back to NZ control systems...the rear cyclist does have some sort of detailed controls and Outteridge suggests that he is indeed controlling the flight of the system. Having heard that before, I had wondered how he could possibly accomplish that with his head down...there is one shot showing his control device which is an interesting twist on the manual input:

So he seems to have a display that shows where the board is and where the board SHOULD be for stable flight. He has a slider lever that he can move up and down and chase the target. The slider switch should technically constitute a separate and isolate-able device from the data feedback system...and the input is manual. That's an interesting solution to the ruleset.

https://www.facebook.com/americascup/videos/1791831947509897/?hc_ref=NEWSFEED