go and buy a top and bottom bag, there about 30$ U.S. I noticed a great improvent in my bobing/slipping of punches within the 2nd week that I had it , it also improves you punching acuracy, timing, and speed a great deal also. but still the best way is to go to class as much as possible, becouse punching/dodging a bag will never be the same as punching/dodging a person.