By accident we got in touch with the owner, Nito. We were looking for a day hike into Corcovado. Unfortunately he didn't have time, since he was fully booked - but he called a fellow guide and a pilot to see if he could arrange something. In the end we flew from Puerto Jimenez into Corcovado - Sirena, and hiked the 16km back to Carate. It was an extraordinary trip, and we had a wonderful guide (Louis Daniel). I suggest you call Nito a couple of days before you head out to this area.