Zip tying the camera suction mount will do very little if the iphone decides to take an exploratory trip around the inside of the car. It is the heavy solid object that needs to be secured. Most suction mounts are light. If my student(s) have a camera in or on the car, it does not go unless it is tethered securely - my way or the highway. If the event organizer wishes to override me, then fine. Another instructor will ride with him. Safety always.
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