Sounds like you folks have a great weekend laid on. Hope the wind gods deliver prime stuff for your visit. Paul is definitely a good guy to hook up with when visiting the flats.
Something that I haven't mentioned in the past, forgot, but is worth mentioning now. It isn't all that hard to get marooned out in parts of the Flats around low tide. The channels aren't all that well marked and despite being well offshore there still is some significant tidal variation. We came back around dusk one time and ended up doing the Volga boatman thing pulling the boat around for about an anxious hour hoping to find deeper water in failing light. We were successful fortunately. Also, there is a large restricted bird sanctuary out there to avoid. Bird conservation has threatened access in a number of places when guys rode in areas best avoided.
Think about visiting the Grand, it is a great setting and Paul and his crew put on an excellent dinner. I was first treated to Che Paul's culinary skills in La Parguera, PR years ago. Quite a treat, he even coordinated a town wide power outage at the conclusion of dinner to improve the view!
Have a blast on Bone Island!
Some shots from the island ...
http://fksa.org/showthread.php?t=120
http://fksa.org/showthread.php?t=468
http://fksa.org/showthread.php?t=126