Trainees lost yet again TrekCo May 21, 2013 TrekCo Life, TrekCo News This year’s trainees seem to be very adept at misplacing themselves – following a misty ascent of Bristly Ridge in North Wales they managed to spread themselves over a wide area on the mapwork exercise afterwards. Every TrekCo trainee instructor has to undergo a four month programme including plenty of trips away to graduate as Instructors.