Not sure when you’re going to be there, but we’ll be at Den Laman the last 2 weeks of January. The person coming with us the first week might be looking for a buddy, as my wife and I will diving by ourselves that week. The second week we’ll be diving as a group, so you’d be more than welcome.
If our times don’t jive, and you’re staying at a resort while you’re there, conversations at the bar have been known to work.
Otherwise, I would say that
@drrich2 covered the good options. I seem to remember Capt. Don’s having a buddy board several years ago, but couldn’t swear to that.
As for posting on SB, I would recommend reposting something about 3 months before you are going.
You can also contact some of the LDSs in your area to see if they have a buddy board, though not sure if that’s really a thing outside of local diving.
Erik