The following site, in French, covers the special qualifications for pilots flying into St. Bart's. The site has both maps as well as a series of excellent and rather high-pucker photographs giving the cockpit view of the approach. The site also covers turbulence on final, with gusts from the surrounding ridge line. The approach seems basically to be flown through a notch in the ridge.
The photographs convinced me to always take a boat to St. Bart's.
http://tffg.decollage.org/Approche/tffj.htm