The "Get Lucky" stuff are always server sided. You may alter the "spin speed", but not the reward.
Since they removed the spin velocity and the "gather the item before it fades away", there is no real use of hacking that part.
Item hacking is not possible, even while bypassing GG.
Check e.g. the Silkroad "Gacha" stuff. You can speed up the animation and such, but not alter the reward itself.