Work them 3 times minimum a week at the start of your leg routine instead of at the end. Rotate between using standing or seated for each time you do em.

8 + sets of standing raises with static hold at the top of the movement ( get on your big toe ) and hyper extension at the bottom of it.
In between sets do single leg body weight calf raises, then stretch out the muscle.

8 + sets of seated raises with static hold at the top of the movement and hyper extension at the bottom of it.
In between sets do single leg body weight calf raises, then stretch out the muscle.

Edit : For the standing variant, you can rotate the angles your feet are directed in to hit the muscle in a different way. Good idea for if you begin to see slower gains after a time. GL.

This post was edited by Foxist on Feb 2 2016 07:10pm