I just took a gander at USCG National Vessel Movement Center (NVMC)
since I'll be heading from the BVI to the USVI again in 3 weeks or so and found that current applicability is for vessels of over 300 gross tons - I don't think Sunsail has a vessel that big in their charter fleet!
The changes making all foreign vessels do a NOA report are only proposed rule changes, at least in one document that I read on that site.
I just checked on noonsite:
Noonsite previously reported that non-US flagged yachts had to submit an Advance Notice Of Arrival (ANOA) 96 hours before arrival. However, the National Vessel Movement Center (NVMC) have confirmed that non-commercial pleasure vessels, under 300 gross tons, are exempted from this regulation.