you might try a fishing drone:
Amazon.com: SwellPro FD1+ Fisherman Best Fishing Drone with Bait Release, 4.8 LBS Payload, 1.3KM Range, IP67 Waterproof, Auto Return & Flip, Self-floating, Entry-Level, No Camera Included : Toys & Games
this one 7 pound lift capacity and 4K camera
Xpeace...