That's one of the things that blew me away last year, first time we saw it live. Close, action packed, 10 boats with a stack of the best sailors in the world all in a closer quarters knife fight.
We were in San Fran for the LV, and while it was fun, it was like most yachting, be great to participate in, just ok to watch.
Sail GP on the other hand, watching 10 boats all charging for the first mark, holey moley! And the detail you can't see live, just look at the big screen, with replays of all the close stuff & incidents.
Well worth a weekend.