RE: scrapes or rubs?
Neither scrapes nor rubs get me too fired up, unless they're in the right location. Granted, they both indicate that there's bucks in the area, but unless you find these scrapes and rubs in the right locations, they're pretty much useless. For instance, scrapes and rubs along field edges, power lines, or tram roads are most often indications of nocturnal travel by the buck. And those big sign post rubs that one often finds are often made to look even more impressive because they're visited by a number of different bucks.
But I have to admit, if I happen across a line of scrapes that run through a nice thick funnel area, with a lot of good doe sign as well, or if I see a cluster of rubs in a real thick bedding area, then I might just hang a stand or two if the terrain and predominant wind direction is right and access and exit routes to the area allow me to get in and out with a minimal chance of being detected.