If Woodwind is not available, You could reserve a car or golf cart ( I'd do a car so you could see more of the island), before picking that up, take earliest water taxi to Klein Bonaire, do the snorkel, get water taxi back, then pick up car/golf cart to go to explore the island . Just about anywhere you snorkel in Bonaire will be a drift snorkel, but the coral at Klein Bonaire is awesome. When we stayed on the Island, we saw flamingos near the salt flats, but also on the northern end of the island near the oil storage tanks. If you are driving on your own, you could also make a stop and the Kadushy distillery, where they make a liquor from cactus on the island.
We also did a night snorkel with Brenda from H20 Visions Bonaire in January 2020 when we did a land vacation here. She does Island tours too
https://www.h2ovisionsbonaire.com/