When doing agility work you can also do a low impact kind of plyometrics work. Plyometrics is essentially used to help build a faster reaction on an athlete. This shocks your system and aids in getting you fitter faster but you must only do Plyometrics once a week or so to avoid injury.
Using ladders and doing a lower impact of the same jumping and bouncing exercises but you can do them more often with less risk of injury!
I did it for about 15 minutes and man did I feel it! LOVE, Love, love! I will list some drills on here if I am requested to do so! YEAH!