If he likes a slower, mid-flex rod, have him use one of the 9/10 mid-belly lines. If he likes a more medium to medium-fast rod, have him use one of the 8/9 mid-belly lines. The 9/10/11 Windcutter also would be good if he likes a more mid-flex rod, and the 8/9/10 Windcutter if he likes a medium to medium-fast rod.