May is not going to be the best time of year. All creeks are rain dependent and the country is shaped like a saucer, so it makes for quick runs into the ocean. Lots of play spots around the country and some creeks on the east coast will run in spring. West and soutwest areas are better IMO. There is a great tidal wave in connemara that runs often. here is a website to hook up with irish boaters IrishWhiteWater.com - Ireland's online River Guide . I rented my boat from a shop in Galway with some cool folks that took me boating River Deep Mountain High : Specialists in Outdoor Clothing and Equipment . good luck and pray that the Clare Glens run fires up. Great creek.