When I say short and long, I do not mean the courses of old where people take off from Miami, run around a few of the Bahamas' Islands, then back to Miami. Key West would be a prime example of what has potential for what I am discussing.
First, third, fifth, and last the normal 7 mile laps. Second , fourth, and sixth laps, out to Sand Key like the old course. I think that was a 17 mile lap? Sand Key is 7 miles from Key West? So it's still a 80 mile race, but it has some rougher long legs with more close to shore legs than long. You can actually see Sand Key from the Mole, but have cameras in choppers and on boats shooting back to live bigscreens etc.
Several of the current courses have the potential for long triangle legs as part of the venue mixed in with short shore legs, but the boats would still almost never be completely out of site.
The other biggee in the US of course is safety coverage. Without stellar safety, there is a huge potential for a lawsuit if something goes wrong. Longer courses take more assets. So permits and sponsors come into play.
We could always run 200 2.5 mile laps like Daytona?