Is there any way I can find out how high my gambling skill is? . He then flew around San Andreas buying every property that was available to. In GTA San Andreas, the player can increase the gambling skill of Carl Johnson by spending money at the casinos. The skill increases by 1 for every $ spent . The best place to get cheats, codes, cheat codes, walkthrough, guide, FAQ, unlockables, Get exclusive Grand Theft Auto: San Andreas trainers at Cheat Happens . Increase respect, money, driving skill and armor in vigilante missions . Save your game, then go to the betting shop and bet all your money on a horse.