Hey @stuartv
My son and I did a land based trip from Providenciales in 2009. We saw Reef Sharks on nearly every dive, often several. My avatar is a picture of one of a pair that swam with us for about 15 minutes at the cut in the wall at Boat Cove. I saw far more Reef Sharks on that trip than I have seen on any other trip in the Caribbean. I wonder if there are less sharks now, or you just hit it during a slow period?
Yeah, I have no idea. What time of year were you there? I guess that could make a difference. I know in NC, the time of year makes a huge difference in whether you see sharks.