Blue Hole in the rain (alternatives?)

Looks like rain next week. We are booked on a Dunn's River Falls and Blue Hole excursion through knowjamaicatours and was wondering if we should skip the Blue Hole and maybe do something else? We're willing to stick it out for the falls, but I hear the Blue Hole gets quite brown in the rain. Has anybody been there in the rain? Was it still worth it? Any other thoughts or possible alternatives?

Thanks!