Replying to Calf cramps

I have this habit - you may know of it - landing backseat.

My calfs and shins hate me.

Problem now is when I ski my calfs like to tighten up and cramp super hard to the point where my legs will be violently shaking while standing in my boots.

It comes and goes throughout the day.

Any recommendations on remedies when this happens or do I just have to wait it out - really putting a damper on my days. (Yes I know not landing backseat will help it but what else)