Yes, you can register offline by downloading a mandatory participation form HERE, filling it in, and sending it by mail along with your registration fee payment by cheque to

Kurling for Kids
3918 des Pervenches
Saint-Hubert, Quebec, J3Y 9A1

Make sure to send in your offline registration early enough so that you can take advantage of the early bird fee of $50 per participant before March 15th, or $75 afterwards.