^I'll add to what AWS said above. You can rent gear from NB and they have been very helpful in getting some things sorted.
Andy Brandt came to Florida earlier this year and I think he will again in the fall/winter windy season (looks like currently only Hatteras and Corpus Cristi, TX on the schedule). He had a few different foils/foil boards but if you're interested specifically in higher aspect foils I'd ask him if he was planning on doing demos. I don't think he would be opposed, he lent me equipment the day before the lesson without knowing who I was nor that I was even registered to his class. He also liked to show some newer fanatic higher aspect stuff. I think I rode 2 or 3 of his different boards: fanatic wing board (higher volume beginner board), 98 liter skate and 4.8 Idol, big levitator board.
I'm not sure about other places but I know some locals that are in Bonaire right now, I just don't know about the foiling situation there as they went for 6.0 and below fin weather.
It's pricy but I also grabbed the Tricktionary book and started practicing lightwind freestyle and am hoping to start trying more foiling freestyle when the weather permits. Andy's lessons combined with practicing clew first/flips/helitacks/upwind 360s has really improved my sail handling. I cringe a bit watching older videos of myself...
www.abkboardsports.com/camps