My guess, Marko, is that the skein keeps it all together and its immature roe. Whereas a roe bag is one of those mesh bags tied with mature roe. I am by no means an expert, just an educated guess based mostly on solo's pic above.
I'm curious, back to my original post, as how to weight the skein. I would guess starting from the rod tip -- float, 2 feet line, three-way split, a foot or so of lead with the #4 hook, and another foot or so with a 1/2 ounce egg sinker?