Our speedboat driver, Martin, has lived in the area for his entire life, spending almost 50 years on the water. Very few people can offer the extensive knowledge of the area like he does, leading you to receive a superb guided tour of Lough Derg. This includes Holy Island, an island that housed monks 1,000 years ago. The abbott of the monastery was none other than the brother of Brian Boru, the last High King of Ireland.