More and more online searches I make about things related to scuba show links to SB. Did a search on SB with 2 of the terms in the title of this thread and got 1 hit that didn't really have much. Doing a Yahoo Search, I found this page, that although ancient, at least had a link to a dive op. I had already found the op on my own, but was glad to see that I could still unearth it on SB.
Saw a few current threads of people going to Costa Rica, as am I in the future, so thought I'd revive this thread in case there is any more current info.
What I know about Herradua Divers in the Herradura/Jaco area is that they are closed from May until November due to crummy dive conditions. I'll be going in January 2019, so hoping for great conditions.