The Line Drill is a great drill to learn the sprint for weight for distance. With each turn, work on using the ground and creating separation from the weight.
I'm going to try this by tying a rope around one of my weight plates. I'm still only on the single spin for both the 56 lbs. and 28 lbs. weight. The 56 lbs. weight is just a grip killer. Does core strength play a part in throwing the weights, like for body stabilization? I think my lack of core strength all around is affecting all of my throws.