I'm going to be photographing a footballer doing a trick with a ball (called around the world, ref: https://www.youtube.com/watch?v=6V1l1nfKK5M) and I need to photograph a sequence, of about 5 images while he's doing that. I'm using a Nikon D700, I was advised to photograph using a shutter of about 1/1000 sec and using Profoto B1 off-camera flash kit (http://www.bhphotovideo.com/c/product/1009783-REG/profoto_901094_b1_500_airttl_monolight.html). The trouble I'm having is the flashes do not recycle fast enough, so when shooting a fast sequence the lights are uneven, or don't fire. I found that you can use the flashes in a Quick Burst Mode, which means the following: When the output is set to three stops below full power, you will empty 1/8 of the tank with every flash, which means that you can flash eight consecutive times with almost no delay in between. When setting the camera to the flash/bracketing option of 1/135 which allows me to photograph on any chosen shutter speed with flash, and shooting on a range between 1/500-1000 sec, the flashes lock to the range 8-10 (10 is max) and I can't reduce them any more than two stops, the Air TTL-N remote switches into the high sync mode - and still flashes don't recycle fast enough and are uneven if I attempt to shoot a sequence. I'm really struggling to find a solution to this, so I would appreciate any advise on the above and how I can improve the situation and the set up to get this right. The location of the photoshoot means I won't be able to plug into the mains.