Got the car show done, which ended up larger than the organizers thought it would. 260 restorations, customs, and street rods! As I knew it would, the 920+ performed extremely well in a challenging environment. There were some good lessons learned in the process though.
Any type of public event where a drone might be used requires event organizers make all that will attend aware that a drone will be employed during the event. The method could be as simple as a couple of signs posted at the entry areas. More helpful would be periodic announcements made over the event PA system as a reminder. It's our responsibility to educate
all the event staff about what we will be doing and what we need them to do. If we assume they know nothing about drones and flight safety we'll be right 99.9% of the time.
If you are not well insured, don't accept the engagement. Even if well insured, carefully review the location and conditions before flying an event and review the conditions constantly. Make event organizers aware and understand that event conditions can terminate flight operations at any time.
The flight time of the Zippy batteries makes it real easy to put in more flights than the ST-16 battery can handle on a single charge. Have at least one spare battery for the controller if you plan on a good day of flying. Two spares would be even better. No matter how many flight batteries you have, you'll wish you had more.
As the show was open to the public, flight control and aircraft positioning was critical. The use of any automated or assisted flight mode was not possible and the operator had to remain quite close to the 920 at all times to assure separation from spectators. Unless you are shooting before an event is open to the public forget getting that long, smooth low level shot because someone will
always get in the way. Although a marked, isolated, and barricaded LZ location was provided,
at show center
to reduce over flying the cars and crowd it was necessary to carry the 920 to different locations for the take off, walking and working towards the landing zone or safe LZ alternate. If there is
any doubt about safety, abort!
In such an environment more spotters and helpers are desirable. I had but one. having 3 or 4 full time to direct people away from the flight path would have been better. Being assertive while being polite is not the easiest thing to do. Enlist volunteers as needed at the location should it be possible. One car club offered their help and did a great job keeping things clear for the 920 to hold a good line.
Pedestrians and spectators can be pretty dumb, or worse, a bit cantankerous, when they are asked/directed to move from their current location or intended path. They will walk directly under a drone, even one at relatively low level, if not prevented from doing so. Be in a position to prevent that from happening, not re-directing them after the fact. Be prepared to abort the flight by diverting the aircraft away from the area as soon as the possibility of over flying a human becomes probable.
Review your kit and anticipate your equipment needs beyond what the aircraft requires several times before the event. Make a checklist and use it. Once there what you didn't take you won't be able to back fill.
Have a set of good ND filters on hand. Having them you get to choose to use them, or not. If you don't have any you don't have that choice and could end up paying a price for that failure. I regret that I had yet to obtain any for the CGO-4 lens. Dealing with the the rapidly changing light conditions and highly reflective subjects in post is a battle I'm losing with the software at hand.
Surprisingly, the public was a lot more friendly towards use of a multirotor than anticipated. A great many smiled and waved as it passed. There was considerable public interest that filled up much of the time between flights with questions and answers. Be a good ambassador. Some of the people attending will likely be requesting your services for a later engagement.
One of the participants: