if you are thinking about COS, try this site, we stayed there over the weekend past, and did the zip lining at ZipIt Forest Adventures and had a great weekend!!
http://www.carrickaccommodation.ie/
http://www.zipit.ie/welcome-to-zipit-forest-adventures/
http://www.carrickaccommodation.ie/
http://www.zipit.ie/welcome-to-zipit-forest-adventures/