Instead of writing the keys code to the characterid field I am writting the player uid to field so vehicles are bound to the player and not a character or key. Keys still get generated but there paper weights.
Copy your (make sure to copy them all)
trade_any_bicycle.sqf
trade_any_boat.sqf
trade_any_vehicle.sqf
trade_any_backpacks.sqf
trade_any_items.sqf
trade_any_weapons.sqf
into a fixes folder.
Modify your
trade_any_bicycle.sqf
trade_any_boat.sqf
trade_any_vehicle.sqf