the best advice for the wrapped KGb is to keep the line tight in between the small handle and the big handle. and when you take off the wake and start the backroll portion of it, you really want to try and get both hands on the handle on land and try to look for the landed in mid KGB it makes the lands 100% more consistent.
i found the ket to landing this trick consistently is keeping the handle close to your hips throughout the trick. to get the final 180, all you have to do is move the rope from the hip(that is on the same side the handle is in) across your body to the hip you want in front. I think in four years that I have been doing this trick I have landed it with either two hands or made the handle pass once. usually if you are coming up short on the spinning it is cuz the rope is away from your body which slows you down.