Neither really. Like someone suggested, the scrapes are an indicator of what's in and what's going on. I never had a lot of success hunting OVER a scrape, but more figuring out where he came from, and went to and then planning my attack. Finding the best ambush spot and going to work. Rubs are nice in that if it's big trees you can determine it's probably big buck... but rubs are not as territorial or revisted as scrapes or scrape lines.