Good point.
...so what is my best way to hook up with a partner(s) to enjoy my first time there?
What I would do, gain information without compromising my position in case I decide to do solo covertly once on-island:
1.) Post here, like you've done, in case anyone knows whether there's a 'looking for a buddy' board.
2.) Check availability and book some morning boat dives the first couple of days, try to 'hit it off' with some other divers on the boat, perhaps get invited along on some of their shore diving.
3.) Go get a temporary e-mail address to use to maintain anonymity, and contact Toucan Diving (their onsite dive services provider) without using your name (or use a fake one) or giving the dates you plan to be there. In fact, I'd probably write something like this:
Toucan Divers:
-----Hi. Planning a shore diving trip to Bonaire, and will travel alone. Considering a stay at the Plaza Resort, it checks some of the boxes I've got in mind, and I hear good things about Toucan Divers. I'm writing to find out how to go about this if I book with you.
-----I would be traveling alone. I know you have boat dive offerings. Do you have a 'looking for a buddy' sign up board for shore diving? How do lone divers connect there?
-----I'm told some people shore dive solo on Bonaire? Is there any policy issue about that? I'm also told there're 'Self-reliant' and 'Solo' courses; do you teach those?
Thanks in advance for all your help.
Be sure to mix the words up enough it's not recognizable; stands to reason some staff at Toucan might visit the forum from time-to-time. The idea is to maximize your knowledge and options, while letting sleeping Big Brothers lie.