I am interested in going to Cocos Island (Costa Rica) at the above time but would love to go with other CCR or SCR divers as opposed to just tagging along with OC divers on my rebreather. I would like to go on the Undersea Hunter live-aboard as I have prevously done a rebreather only trip with them and they are great with rebreather support. But we would need at least seven other rebreather divers besides myself to justify a guide also using a rebreather. August or September is the best time to possibly encounter all the types of sharks including possibly whale sharks. Let me know if any of you fellow rebreather divers would have an interest, this trip would of course be fabulous!