I love using Hudson Grotto for AN/DP and the deep dive in Advanced. You can hit 132' in the open water in Hudson Grotto if you know where to look. Rumor has it you can hit 145' too, but I haven't found that spot yet.
While it's definitely a stretch, I have heard of one trimix instructor that taught a normoxic course there more than once...
While it's definitely a stretch, I have heard of one trimix instructor that taught a normoxic course there more than once...