I work double sticks into my training primarily to cordinate the left side of my body with a weapon in it. After having watched a few of Hock's dvds, I have a better idea of how to change from just dancing the pattern to flowing through some attacks out of the pattern. I'm not all that good at it, but I am getting better. I also do the sinawali that I learned with different weapons, my favorite being my barong and tomahawk. As far as empty hands for the stick movements, by all means. I can't do the six count that I learned with empty hands, but the first four count I every learned, I can. It makes a good, umm...finishing in-close type drill, I think. The strikes just seem to come from nowhere, and all of the sudden im in kissing distance doing hammerfist, palm strikes, and eye gouges without having to think about it. Sort of like the "shredder" as I understand, but each one is a separate strike. I also to espada y daga, to train my left and right, but instead of siniwali, I go through the increasing twelves with the stick in one hand, and the knive in the other. Every time the stick hits a high angle, the knife strikes low, and vice versa. This is something I learned from my Dad, who was a boxer, and from reading "The Tao of Jeet Kune Do", by Bruce Lee. "Never be a headhunter", Dad always says. Anyhoo, that is the extent of my double stick training.
Kent