Capable of more than four times the wind speed a DN ice yacht can reach 100kph and in a fleet of 50 boats the closing speeds are both alarming and intoxicating. Even Ben Ainslie's former Olympic coach David Howlett competes in his 60s. Karol Jablonski is a 12-time World Champion and one of a number of contributors to Sailjuice's exclusive ice boating content...