We operate 4 Matrice 100's in our commercial drone flight service business. We now need to attach a hook to the bottom of the Matrice that can carry a light load and release it in flight. The only such mechanism I've found seems to have gone out of business: A new player in the civilian-drone market, GLLD presents its miniature cargo hook. - sUAS News But I keep thinking someone must make something similar. I'd like to rig it up so the release can be actuated by the C1 or C2 buttons on the back of the Matrice transmitter. Anyone have any ideas? Many thanks.