I don't use plyometrics because such a dynamic form of training makes me more prone to injury. For me weights form a mainstay of my training, as do circuits. Nevertheless, I undertake a number of power-orientated sprinting technique drills, such as tire-pulling. As far as weights are concerned, I'm lifting weights that are comparable to any sprinter in the US.
Circuits are an important part my training mix. Various exercises are implemented on a very short recovery basis: press ups, standing squats, squat thrusts, sit ups, tricep dips, burpees, crunches etc. 5 sets on partner basis, 50 reps per exercise One circuit requires two athletes to work together – when the first finishes his designated set, the second will carry out his. This adds an important element of competitive rivalry: no doubt each athlete will try to make the other suffer.
I believe that plyometric training for sprinters is unnecessary for the following reasons:
Sprinting itself is plyometric (and develops RFD)
Ground contact in sprinting is less than 0.1s for elite performers at top speed. Ground contact for most jumps/hops are significantly longer.
High injury risk especially at muscle tendon juncture
Olympic lifts have a plyometric component (the double knee bend)
Without use of (expensive) technical equipment such as jump mats progression is difficult to quantify
If performed, foot contacts should not exceed 40 per session.