We were at Mt Shasta in northern CA a few weekends ago and saw an unusual type of board. It appeared to be about 7-10" wide and about 4' - 4 1/2' long. Reddish in color with a traditional round shaped tip and a squared off tail with a triangle (pizza slice) missing (a twin tail?) from the tail. The rider was situated in a stance similar to a slalom water ski as opposed to the splayed stance of a typical snowboarder. My 15 yr old son was impressed and wants to try to find one. Any ideas what this board my have been or where to find something similar to purchase?