Hi Max, in response to your qtousien, we used the Westcott Apollo 28\" kits and they have a handy adapter that attached to a lightstand, holds the Speedlite, and accepts the umbrella pole; it\'s really an amazing system and puts out beautiful quality light. And the reason we didn\'t bring our Hensel kits (although we had approval) is that they put out too much light! We were working with very dim ambient lights on the work trucks/equipment, and it was important to balance our strobes with them; so the Speedlites were the perfect match as they can go to much lower settings. For 99% of our outdoor work we use the Hensel Porty L 1200.JS, to answer your qtousien, we had a full day to shoot with 4 miners who work at the mine; 2 at a time for a half day each. They weren\'t actually doing the tasks as we shot, or we would have been in the way! -Tyler