If you are using Voilé skins, take a spare basket that slips over the ski tip to attach the skin to the ski. These baskets are prone to breakage.
If using cloth skins, ensure you re-glue them occasionally. Wet Australian snow plays havoc with these skins. If they are not sticking at all, sew some shock cord to the end of them and tie them off to your binding. Dental floss makes excellent sewing thread as it has a very high breaking strain.