Your probably right. It was a race course, they are dangerous, other ski's are running around you all the time. If Trace was concerned about it then he should not have raced. What is the difference from hitting a concrete drain to being hit by another ski? Not much. I have seen a guy that got tossed Got run over, hit in the head before (Macon, GA 2001) He is still eating with a straw last I heard. It is a very unfortunate accident. But that is what it is. Want to cast blame. Then sue Kawasaki Heavy Industries for producing a PWC that has a steering cable break. Oh wait, things break sometimes. Lets just sue the Promoter instead.....
I have heard that he didn't have insurance, but that is hearsay. But if that is the case, Why was he at Nationals, I would bet he was at the WF as well.
Man up, take responsibility for your own actions. Nobody forced anybody to get on on a "Race Course" and race.