We have our first UKI (UK Agility International) trial in Florida on Jan 11&12. Up to now the closest trial that I have found was a trial held after an AKC trial in Alpharetta, GA.
If you would like some more information here is a link to the UKI web site. Also, here is a link to a Quick Start Guide PDF document from the UKI site.
The jump heights are close to AKC jump heights so all dogs can compete. You can start at the level you are at in other venues.
The trial is in Zephyrhills. There is also a four day AKC trial in Brooksville which is about 35-45 minutes away so you could do a couple days each.