Honda,
So sorry it's taken so long to respond. Going to Bahamas waters on a charter poses several problems. The main one is that it requires the operator of the vessel to buy a commercial Bahamian license which costs $10000. There are some other options though. Give me a call and I can fill you in.
Hando,
I run my boat out of Islamarada in the Keys. I do charter trips for $500 half day and $900 all day for up to 6 people. On the occasion that I take my son and friends out we occasionally have room for a couple extra divers. On these, we split the expenses.
If you have something in particular you want to do, give me a call and we can try to work it out.