last year i was useing 100 lb. tractor weights. just cause they were available, but they are a pain in the butt to add and remove plus they take up floor space. but i wanted to see what a difference it made, and its deffinatly needed. so this year im getting a fat sac package. its 3 ballast bags and the total weight of all 3 together is like 740 or 780 lbs. with a pump. and that way i can deflate them if their not needed. its going to be my unsuspected birthday present. hehe