This question doesn't belong here.
Ankle weights do not help much. If you want to train explosiveness you should be doing squats, deadlifts, etc. You have to generate a lot of force to train the high threshold motor units (HTMU's) that control explosive movement. Since the equation for force is
Where m is the mass and a is the acceleration, you train with high force with heavy weights, and/or fast movement. If you have more questions post in the "weight training" or "personal training" section.