My advice, if possible, would be to make the arms and legs adjustable. This way, for one clip you can have it like a cross the way you described it, and then another clip you can move the arms straight up so they're closer together and spread the legs (a position I always thought was better for tickling because it left the girl more vulnerable). This way, you'll have a good bit more variety when using this device.
My other piece of advice would be to put Prya and/or Amanda in it once you're done, but that's beside the point.
).
