I have just looked up the history of wheeling. Before 1988 it was not mentioned. You had to have 5 (not 8) in the scrum at all times. Wheeling as an attacking weapon allowed the back row to run off with the ball, but the opposing back row could also break off in defence. From 1988 you were not allowed to wheel beyond 90, but it was merely a reset, not a turnover.
From 1996, all 8 were required to remain in the scrum until it was over, but it still couldn't wheel beyond 90.
In 2003 the wheel turnover was introduced (as an ELV). From being an attacking weapon it now became a defensive weapon.
From 1996, all 8 were required to remain in the scrum until it was over, but it still couldn't wheel beyond 90.
In 2003 the wheel turnover was introduced (as an ELV). From being an attacking weapon it now became a defensive weapon.