Snakeskins are usually tapered (small at the ends and larger in the middle).
My "tarp tubes" are the same diameter from end to end. Therefore, there is a chance that the ridgeline string could fall out of the ends unless you have a drawstring to cinch it closed.
Does that make sense? If not I can take a picture and show it to you, although I do not have any tapered "snakeskins".
If you Google "Hennessey Hammocks Snakeskins" you should be able to see some pictures of snakeskins (they invented them).
Best of luck