Every time I see a true underhand caster (long leader, short head, etc.) do a demo (so far always on tape), All they show is the single spey or switch cast, or whatever they call it in their vernacular. What about downstream casts like the double or snake roll? Do they get the same performance in terms of distance and loop shape? I imagine they can just get leader stick with the snake, and can probably boom that, but what about the double? Haven't seen "The perfect cast" yet, and don't know that I will. I'll probably wait the 8 months for the Rio DVD.