Have him do off ice leg lifts in spiral position, with his skates on (or ankle weights). Have him hold onto something and get into a spiral position, pushing his belly button down toward the floor while squeezing his shoulder blades together and lifting his chin. Then have him raise the back leg and then lower halfway, raise all the way, lower halfway, raise all the way, as many times as he can. Repeat on the other side. He can also do the same thing and just hold the spiral position as long as he can on each side.
If his leg is lower on his spiral than on his parallel (camel) spin, it's probably a technique issue. On a spin, the skater is balanced on the ball of the blade, right behind the toepick. It's also OK for his skating leg to be a little bent on a camel spin. But on a forward spiral, if he lifts his leg too high and that pitches him forward onto his toepick, he will do a face plant on the ice, which is probably why he unconsciously keeps his leg lower. The solution is to push the free foot forward and pull his hips back away from it so that his weight is on the heel of the skating foot and the hips are *behind* the skating foot, like this \
In a forward spiral, the hips should NEVER be directly over the skating foot like this |
Telling him to lift the toes of his skating foot while pointing the toes of his free foot will put his weight on the heel of the skating foot while giving him a nice free leg position as well.