NDKoze I don’t have any pictures or videos, but here is what I would suggest…
After stuffing, twist the end of the open casing and use a hog ring to close it. While clipping on the hog ring, pull the two ends of the casing together and wrap the string from the already closed end around the end you are twisting and clipping. Clamp the hog ring on both the twisted end and the string. Then the string can be used to hang on smoke sticks.
Or, just twist and clip the casing with a hog ring, then loop and tie the string around both casing ends, then making a loop of string to hang on smoke sticks at that point.
Many times the string on the ring bologna casing can be placed under the hog ring used to close the other end, and then use the string to hang on smoke sticks. In one fashion or another, that string is typically used to hold the two ends together and hang on smoke sticks.
Let me know if we can help further.
I will try to add ring bologna to my to-do list for the future and get a video made to help visually demonstrate things better.