suzie Q
We hired a boat last year on the beach at Arillas, they just need a couple of days notice, had a great day. And no you don't have to be an expert. Have a look through the posts on snorkeling, you will see that several people had a good time using the boats. The company that runs the boats is San Stefanos boat hire, look on the link on the main menu. I am sure they will sort you out.
Paul