DC methods have worked wonders on my calves. To do it, pick a weight (it may take a couple sessions to get a good judgement) you can do 15-20 times. Push the weight out and lower slowly, then hold in the stretched position for 15 seconds. Reapeat 15-20 times. It seems easy the firt few reps, but if you picked a good weight, wait until 8-12 reps and it burns. Then the last reps are absolutely brutal. Then next workout do more reps if you got on the low end of 15-20 or bump up the weight if you got 20+.