Hey quick question for you guys - I am not a flash user per se...my preference is to shoot in natural light. I was just hired to shoot a horse show in September - indoors, in the worst lighting imaginable. The footing in the arena is dirt - the walls or 'kickboards' in the indoor are the same color dirt - and the lighting, I'm pretty sure is florescent. I've tried shooting in this arena before with only marginal success. I'm not even sure that the photographer in the center of the ring got great shots with his flash (I don't know what he used). The dimensions are probably 180' X 70' "ish" and the only thing in the background besides the arena walls are bleachers where the spectators sit. Any natural light is coming from the end door, where the competitors enter into the ring as well as a high row of window way up close to the ceiling which is typical in a horse barn. The only flashes I own are an SB600 and an SB800 - and I haven't used them in I don't know how long. I need something that is going to recycle super fast or figure out how to set up a slave maybe? I'm not sure....I really want to shoot this show to support our breed and membership chapter but I'm worried I'm going to be underpowered so to speak...any suggestions? Thanks very much in advance!