Some quick searching and I found a site that the guy said he didn't tie them off. He would just pinch where he wanted to cut and then cut it. He then put the sausages on a tray so they were separated and froze them for a couple of hours before packaging them so the sausages wouldn't squeeze out the end when he packaged them. It worked like a charm.
No problems with the casings riding up then while cooking?
I have been wanting to try them, try some sticks and I hear they are better done in collgen. <shrugs>
Thanks heap Disco.... you are as always leading the pack!