Practicing with a cross above the hoop significantly improves depth control, resulting in more shots landing dead center in the hoop. Tran, C. M., & Silverberg, L. M. (2008). Optimal release conditions for the free throw in men's basketball. JOURNAL OF SPORTS SCIENCES, 26(11), 1147-1155. doi.org/10.1080/02640410802004948
Practicing with a cross above the hoop significantly improves depth control, resulting in more shots landing dead center in the hoop.
Tran, C. M., & Silverberg, L. M. (2008). Optimal release conditions for the free throw in men's basketball. JOURNAL OF SPORTS SCIENCES, 26(11), 1147-1155. doi.org/10.1080/02640410802004948