If you don't understand this, wait for someone to post a video. ^^

Goal: Avoiding getting 300 bullets that you have to dump after Pier 69.
Method: Have a couple of rounds of ammo for a drive-by weapon left over after killing T-Bone. This way you don't get any uzi ammo at all ([11:22 PM] Lelresetfeg: " 1 bullet will be enough lads"). Code: https://pastebin.com/kiSLzWy9
For this, you need to have some drive-by ammo after Ice Cold Killa and then avoid shooting it until after killing T-Bone. For that, you need to use two strats:
1) For the drive from ICK to P69, use The New "no auto-switch" glitch: Basically, if you cancel the "hang up phone" animation, CJ will not switch to a drive-by weapon the **one next time** you enter a vehicle. You can get this glitch by jumping while the call that ends ICK comes in. As a reference: This call comes in 2s after collecting the phone, should be easy to time.
2) To have a call while ending Pier 69, you just never hold the call. You start holding it while sniping Ryder. With keyboard&mouse controller settings, you cannot do that. You can temporarily set the Joypad settings, though, and use the joypad-exclusive "2nd fire" on-foot-binding to hold the call. Just set it to your preferred button(s).



Getting the uzi ammo during the mission *Jizzy* cannot be avoided this way. Your drive-by ammo is increased to at least 200 no matter how much you have.
[ going by this opcode reference: ```0563: ensure_player_has_drive_by_weapon $PLAYER_CHAR min_ammo 78``` https://www.gtagmodding.com/opcode-database/opcode/0563/ ]