Type "floater" on pc or dial 1 999 356 2837 in game. Console users: left, left, lb, rb, lb, right, left, lb, left (xbox) or left, left, l1, r1, l1, right, left, l1, left (playstation).

For best results, take a fast vehicle to any ramp location, and activate franklin's special ability right before the jump. Release the ability mid air for maximum height, and tap the action button to perform some incredible flips. Most vehicles react differently to the reduced gravity, so experiment a bit sometimes exiting and re entering helps if they're not floating properly.

Good to know: achievements won't unlock while using this, but the stunts you can pull off are definitely worth it. Motorcycles tend to work particularly well, especially when combining the reduced gravity with franklin's driving ability for those perfect landings.