On board with @Horton on this one. Regionals is Nationals. I would add remove the qualifying scores, get everyone involved. It would be nice if they could all be on the same day with the same schedule, but let's not limit this anymore than necessary. Even if they are on different weeks, who cares. Different site, different driver, different boat, different days, does it really matter that much. Sure some people will have better conditions than others, with skiers skiing 3, 4, 5 hours apart on the same day, the conditions are different anyway. Let the regions run their tournament the best they can in this current environment.
@JeffSurdej I do applaud your efforts to make this work in some fashion. I don't think you are going to get multiple sites to sit idle while they wait for another site to pull their skier.
A central Nationals with 150 skiers that can drive to the site, isn't that really just a Regionals anyway. Either way this year's Champion will always have an * by their name.