There are really two seasons to my life. In competition and out of competition. Usually summer is the time for building strength and adding variety to the training regiment.
A great way to do this is cross training. Every summer I am fortunate to get out on plenty of boats and hit the wake surf. This is a great way to keep on your balance training while staying sideways, especially because your feet aren't attached to the board. Riding switch has been very valuable and transferable when I get back in the halfpipe.
I also find it very valuable to break out the skateboard. Even if it's just rolling around on flat as flat ground, it's a an awesome tool. Rolling around my local skatepark is a great way to hit up some transition, kinda like you would do on a snowboard. I'm not amazing but I can feel the skills building at every ride.
Lastly, I have been mountain biking a lot more. Not just on the road or mellow trails, but I have been hitting up some downhilling. In the past I have been against getting on a bike to go at high speeds while weaving through trees and over obsticles. But I have really been having fun going to Whistler Bike Park and Blue Mountain. The high pace decision making and manouvering is good for keep up those skills for snowboarding.
I have really valued these three sports as cross trainers for my snowboarding. All will play a role in getting me to Pyeongchang Korea 2018.