In 1994, following the sacking of John Dorahy, West was appointed as coach of Wigan, after fans petitioned for him to get the job. In his first month as coach, at the end of the 1993–94 Rugby Football League season West secured the First Division Premiership Trophy against Castleford, and then travelled with the team to Brisbane, guiding them in their 1994 World Club Challenge victory over Australian premiers, the Brisbane Broncos. At the end of his first full season, he and the team won the League Championship, Challenge Cup, Regal Trophy, and Premiership - the 'Grand Slam' of all 4 trophies. Even though Wigan dominated Rugby League from 1985 to 1995, it was the only season the club achieved this feat. He stayed on in that position until February 1997 when, following an early exit from the Challenge Cup in 2 consecutive years, he was replaced by the unsuccessful Eric Hughes.