Hi Sean,
In october i visited Puerto del Carmen. My friends heve been going there for years and the diving is very nice. I am not diving a rebreather yet but i lookt at a place where i can do an intro dive but did not find one. I rented my tank and lead with Safary Diving. Nice people and good diving (Take a look at Felix he is a nic grouper!!??!!). In 2006 i saw a guy diving an inspiration from they boat so i think it is possibe. My friends did some deep air diving below the shrimp cave, there is a nice black coral field. I think i would be very nice with a rebreather. Could do your deco on the the first two rocks infront of the bay (+- 15 to 6 meters) an ongoing on the sand. Well save dinving and give Felix a kiss
Groeten Dennis