Amazon.com: Release and Drop Professional Device for DJI Phantom 4 (all models) – Drone Fishing, Bait Release, Load Delivery, Search and Rescue and Fun – U.S. Patent - by DRONE SKY HOOK :
Gannet X - Electronic Payload Release For DJI Phantom 3 & 4 Drones – Drone Fishing - Gannet
Payload Release for DJI Phantom 3 3D model 3D printable | CGTrader
Shinkichon Pelter Payload Delivery Drop Kit Fishing Bait/Wedding Proposal Thrower for DJI Phantom 3 Advanced/3 professional _ - AliExpress Mobile
Gannet X - Electronic Payload Release For DJI Phantom 3 & 4 Drones – Drone Fishing - Gannet