You can document via apps like Onx in the notes section when you mark a waypoint of any kind. I try to give details to jog my memory of what aspect of that waypoint compelled me to mark it in the first place. You can just mark a rub or scrape but also add notes in the context of why that sign is important enough to mark it. Is it close to bedding or feed? Is there adequate cover and terrain features (benches, saddles, spring seeps, ridge spurs, ridge lines, creek crossings) that seem to funnel deer movement. Is that why the rub or scrape is there? Are there more around than one? Does the sign look more random and sparse or heavy and used over long periods of time? Rub clusters back in thick cover tell me... I think a buck is bedding around here its probably a spot to consider a sit near about 75 to 100 yards from this section on hopefully a trail intersection or two within shooting range. What's the wind need to be for you to get in there undetected? How will I get to that spot undetected? Do I have to wait until thermal shift? When I'm scouting in the late fall/early spring I think my dog gets so bored because when I'm into sign or terrain features or both, I'm standing there thinking and adding notes to my waypoint markers. I also like to just go to the "Notes" section of my cell phone and create a heading with the date and location and add information that way too. You can then just air print it and put it near your hunting reading material for review.
I get all the focus on the proper location and yes, overall where you hunt is vastly more important than how you hunt.... for the most part. But, if you're a home town ground pounder day in and day out in pressured public land or whatever, how you hunt becomes very important if your goal is a decent buck in the area you have to hunt... I think how becomes pretty critical too.