Hi,
Definitely set your stand up downwind and at least 40-50 yards from the scrape. You may catch him circling in from the downwind side. During the rut, sometimes adding buck scent to the scrape will make him come in during the day. If it' s a mature buck, he will see the presence of another buck on his scrape as a challenge and may come in to answer it in the daylight.
Good Luck this season!
Mark
http://www.buckhuntersecrets.com