we have been to st maarten 3 or 4 times. we have always stayed in pelican key (simpson bay area). we have used different shops on different trips. last trip was with dive adventures (aquamania). see vinny if you go there. he is the owner. great guy. let me know if you have any specific questions. you can pm me if you like.
just found out vinny is away for awhile. sandra apparently is running things for now.