Two friends of mine here in Bocas, offer different tours: Marcel has a beautiful 40' catamaran and takes groups on full daytrips through the surrounding islands. His daytrip includes lunch and several stops for snorkelling and dolphin viewing. All for the cost of $40 per person. Daniel, with both a large catamaran and smaller powerboat, offers overnight tours, so you may want to arrange before or after your stay at the hotel.