I use a tray because my hands aren't large enough to be comfortable holding a large transmitter and using the two finger method and flipping the occasional switch. Gets hot in Alabama in the summers and the trans. gets slick. The fuzzy part of the stick on Velcro helps my grip, but the tray is better. I don't use the side supports so it is more like a strap but it doesn't pull on my neck. Makes flying more precise for me.