Multinnov developed a system allowing to release a fishing line since a drone, this technique comes to us from America. To be able to send bottom lines always farther, it is enough to take its bottom line to the wide by means of a drone and once the good reacheddistance, it does not stay more than has to release the line and to wait for touches!!
The system comes to settle on the landing gear. Easy to set up and has to remove, this system is completely autonomous with that own remote control. On the case of dropping there is one girl pull which allows to arm the system to block the line on the drone.
Using method device and installation on Mavic Pro for example: