i know of many areas i can find scrapes from opening day clear into LATE winter/early spring...
just because there are rubs on trees doesnt mean there HAS to be scrapes anywhere near...could be both...could be one or the other...
i find scrapes are pretty predictable and are found in the same area year from year...not always...but pretty common for me to find scrapes in the same area, even in the same exact spot, year to year...
i dont know enough about scrape hunting to say much more than that except i killed my buck thursday over a VERY actively freshly hit scrape...its something i'd love to learn alot more about...