This seemed somewhat innovative several decades ago…wrapping narrow sections of stretchy latex up the hook shank, one slightly atop the other to form a plump, segmented body. Yet, you rarely see it now. I rarely think to do it. It is a simple technique in the scheme of tying and with color markers (upon lighter colored latex strips) can appear very realistic. I include a nice Step by Step (SBS) tutorial from a 2007 post by Overbrook on the SE Fly Fishing Forum. It provides a nice visual re the segmented appearance of wrapped latex.