HiYa sail2wind...
Is your boat privately owned/foreign registered? And you have never had to get a certificate of temporary import? They asked for mine. To get it they asked for reg+BoS and my 200 bucks+a 12 dollar document fee.
From:http://www.bvimarineguide.com/clearance.html
Temporary Importation : $200 for private vessels staying over 30 days.
As alway, you just must be lucky! My management company said there are 2500-5000 dollar fines if you don't have one.