Just for grins I stuck together an extender and attached it to the front of my standard reflector. I used the cover from a CD bulk package which is essentially a tapered cylinder, and lined the inner surface with aluminum foil.
I'm certain it isn't optimum but it did narrow the beam without much loss. I was getting about 2-3 stops more light at the subject than with my speedlight set to 50mm equivalent. More important, I could get a useful exposure at 60-80 feet with only 1/16 power. It was nice to be able to quickly change the output if the subjects moved closer, not having to jump into the camera menu. Several times I got 3-4 rapid fire shots in a row without underexposures, which I was never able to do with the speedlights, even at close distances.
Overall I'm very happy with the 360. I did have one weird thing happen, which was not the fault of the flash: I was using the FT-16 on top of a Yongnuo 622C on camera so I could remote control my fill speedlight as well. About 10 minutes into the shoot the 360 stopped syncing with the camera; it would trigger but not during the shutter interval as the only illumination came from the speedlight. Then the speedlight stopped syncing as well. Both lights were triggering but the frame was dark. I basically power cycled and reset everything to no avail. I even pulled the YN622C off and stuck the FT16 directly on the camera hotshoe; nada. Finally in desperation I swapped to another YN622C and everything worked again. To me this makes no sense because taking the YN622C out should have allowed the FT16 to work anyway. It must have been some weird failure mode that eventually got reset with enough fooling around.
Anyway, the rest of the shoot went without incident and I got about 300 frames altogether. The battery pack still shows full. I'm not sure whether I should buy another 360 so I can share accessories or add a CL600 next. I'm power mad, I guess. 