Hi:
Love Bonaire! That said, you may well eventually want to go somewhere else. From what I've seen on the forum, these places come to mind...
1.) Curacao - Bigger than Bonaire, longer drives between sites, more sandy beaches, I think someone way back when indicated longer swim outs (all from what I'm told; haven't been). Solo diving is not against the law, but some operators may forbid it (I imagine that's an issue with diving the house reef?).
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Curacao vs. Bonaire.
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Curacao 1st Timer Trip Report.
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Place to Stay in Curacao.
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Curacao Trip with Teenagers in June.
2.) St. Croix - One of the U.S. Virgin Islands, seems to be a slightly lesser known destination, popular for boat diving and some shore diving. My only 2 dives there were by boat on a cruise ship stop.
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Discussion about St. Croix as a dive destination.
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Best Boast & Shore Diving Locations.
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Overall Impressions from First Visit to St. Croix.
3.) Cayman Brac is occasionally mentioned regarding shore diving. Vincent54 posted his experience with that and reported one way to do it was grab tanks from Reef Divers or Scuba Shack (at the latter he paid $10 U.S. air, $12 nitrox/tank, tanks by the dozen). He noted it more difficult than Bonaire; if there’s wind very little of Brac is calm. If it’s calm, he heads to northeastern spots, but didn’t recommend some end-of-island sites when surge is up (can get unpredictable currents), and the southeast is also advanced (lots of surge, hard to get in & out). From my inquiry with a Grand Cayman dive op., there's not actually a law against solo diving in the Cayman Islands, but over time on this forum I've seen there's a perception it's forbidden, so evidently it's at least not well-enabled. I don't know how much of Vincent's Brac diving is solo, if any, but I don't recall him mentioning a buddy.
Richard.