Strobist info: 1 vivitar 285 at full power in front of the models and to the left of the camera. Two neon strips sellotaped to the jump platform (my versatile folding ladder). Using gadget infinity remote. Models jumping onto an old foam mattress.
I managed to get them keyed up about this, as it marks a moment in their karate - William has his 2 stripes white, and Maria has her yellow. So I shamelessly used their excitement with the achievement to plan (all week) and execute this shoot. Whole shoot length with practice jumps and all about 1 and a half hours in two sessions. One pre supper in under exposed ambient and one post supper in darkness.
Only had one missfire on the gadget infinity in about eighty shots.