The Cayo Perico Heist is one of the most profitable heists in Grand Theft Auto Online. You only need the submarine – The Kosatka to pull it off. The Sparrow will come in handy but you can use an Oppressor or a Pegasus boat to get to the coast.
First thing to do is to go to the Music Locker under the Casino and have a talk with Mini Madrazzo. After that, you can buy the Kosatka on Warstock Cache and Carry from your phone.
If you can’t afford the Oppressor or the Sparrow the best thing to do is to park the Kosatka at the Del Perro Pier. Then you can jump down on the Kosatka from the pier and you can get out on the beach simply by jumping off of the submarine.
This is how:
Here is how to do The Cayo Perico Heist in 75 minutes.