Scrape hunting is much more than 10%. The last few days of pre-rut can find bucks visiting /making scrapes. I love scrape hunting especially when aligned with rub lines. When you have a high doe to buck ratio scrape activity will be low as their need is absent, however, when you have few does, scrape activity increases as bucks can't locate enough does so the calling card left at scrapes can be productive to hunt them. Scrapes bring does, does bring bucks!!