Today I discovered that due to GTA IV's water physics, a helicopter can push the water in the Middle Park lakes away so you are actually able to land on the bottom
Helicopters in GTA 4 with automatic installation: free download helicopter for GTA 4
Liberty Sky-lift for GTA 4
How to Pickup a Car with Cargobob in GTA 5 ONLINE (how to use cargobob hook to lift a car) - YouTube
GTA Online: Best Helicopters & How Much They Cost
Download Working Helicopter "Air Lift" for GTA 5
How to Use a Chopper in GTA Online: 14 Steps (with Pictures)
I wish we could buy this helicopter and transport vehicles with it : r/gtaonline