I may add that if it is raining and I know it is going to quit around a certain time I may lean towards a primary scrape. I have read about and witnessed mature bucks freshening their scrapes within a half hour after a decent rain. I had a plan for a scenario like this a few years ago and the rain stopped about a hour early....on my way to the stand I bumped a mature buck. I continued to the stand for the evening...as it neared the end I shot a nice 8 pointer that had just finished freshening a scrape about 30 yards inside the timber. I am unsure if it was the deer I bumped.
Bucks and does alike, if I ever lose the rush leading up to and after a kill, I will hang it up. Knowing me, that will never happen.