My way of the one man army achievement

For this, you MUST be on the second island and NOT on the third one YET.

1. Go to the heli tours (they should be on the bottom of the map that they provide you with on the second island.
2. Steel the helicopter
3. Ride the heli to the third island (then, you should get 6*'s)
4. Ride around for 5 MINUETS then... WALAH
5. 40G's for you