I think we need more information. Like...


Where will these shots take place? In an indoor driving range or outside? If outside, what part of the day?


What equipment do you have at your disposal? You mention flashes--how many and what kinds do you have? What is your flash triggering method?


Is this for a commercial shot (for use in advertising), or will these people actually be playing golf at the time?


Is it an absolute must that you freeze the point at which the club head strikes the ball? With such a high-speed action sequence, I think a small amount of motion blur at the point of impact might be nice...