Kamikaze kayakers in search of adrenalin highs hit 45mph at Mid Wales reservoir<br /><br /><br /><img src="http://ll.broadbandsports.com/images/21891_thumb.jpg" alt="Extreme kayaking at Llyn Brianne reservoir" title="Extreme kayaking at Llyn Brianne reservoir" width="150" height="90" alt="Extreme kayaking at Llyn Brianne reservoir"/>
