Lowering gang heat
Note: This trick can also be used for easy money. Go to the island and shoot as many gangsters as you can find. Stay as long as desired and collect as much coke as possible. If you stay long enough, you will have full gang heat when you return. After collecting about 2,000 to 3,000 grams, return to Miami with a plane. Once you return, call your car as soon as possible. If a front is not attacked when you arrive, the gangs will come after you. Survive their attack or defend your front. Once done with any other annoyances, begin to sell as much coke as possible. Each 100 gram can lower your heat gang heat by 300 per successful transaction. By the time you are done, your heat will be at zero and you will have lots of extra money, which you should launder as soon as possible. It is also a good idea to do this before distributing kilos of coke because low gang heat during a distribution mission will result in very little attackers and almost no chance of a front being attacked during it.
Use the following trick to keeping your heat low during a gang fight. Go into blind rage at the start when there are plenty of people nearby. You will generate no visibility during blind rage. Use this to eliminate as many gangsters as possible before risking your visibility.