I can't believe I'm asking about this, but I trust you guys to give honest opinions and good advice. So CleanRun sells a product called Go Dog that to me, appears to be like a Gatorade for dogs. Its says in its description that's NOT what it is, but it's probably the best way to describe it. One of my teammates in flyball puts this in his dogs water during tournaments. Another teammate gave his dog these ProPlan bars that I've never heard of throughout the tournament. I guess my question is this- have any of you with performance dogs given your dogs any type of supplement during trials or other events? I haven't heard anything negative about either of these products (although I would probably not bother with the ProPlan bars). If anything I would try the Go Dog. I'm interested, but hesitant at the same time. I would like to help my dog sustain her energy throughout a flyball tournament, but at the same time, I don't know if it's even necessary. Missy is only 2, so very young. She has a lot of energy, doesn't seem to have any trouble sustaining throughout the weekend, but we have a larger tournament coming up that will be 3 days in a row. I'm wondering if this is something I should purchase to try out and see if it helps her over that long weekend. P.S., "Go Dog" makes me think of Toddlers and Tiaras "go-go juice" when they were giving the little girls Red Bull. I know this stuff doesn't have caffeine in it, but I can't help but get a mental image of Missy bouncing off the walls of her crate in between races. I hope that doesn't happen!