I started doing Speed, Agility, and strength training at a local facility, CES
http://www.competitiveedgesports.tv/ . If you live in the Georgia area i highly recommend it. At the beginning of the summer and was running the 60 around 7.3 7.2. Currently i am running a 6.8. I have been on the program for about 4 months now and still getting stonger. If you have any sort of facility such as this where you live, it is a must to get to the next level.