Swiss slalomboards

[Adrian Low]

I posted this at ncdsa too, but i thought i would get more repsonses here. What is the optimal stance for the thin swiss flexy boards such as indianas and summits? I've got a indiana chief 85 and have been, uptil now, riding it with my front foot just behind the trucks and my back foot 2/3 of the way down the board. TOday i tried riding with my back foot further back just in front of the back bolts and found it rode differently (not sure if it was better or not). Can anyone with experiance with these boards help?