I had this problem for the first two seasons I hunted. I would never see deer. That's when I began paying attention to where my scent was blowing in relation to where I was watching. It may be good where you expect to see them but is it blowing on their incoming trail. Also I learned to stay out of clearings. Accept the fact that you might only have 30 yrds of visibility and 15-20yrds of clear shot distance. I also began having success going mobile. Find the freshest sign set up your stand and come back next morning a couple hours before daylight and wait until at least 12, but try to make it till 3. Always be ready! In a close quarter spot when it happens it's going to happen fast! These are not tips from a pro just things I've done to become more successful.
In the second picture the white oak tree was 18 yrds so you can have an idea of distance. I took a buck in this setup at 8yrds.
Some good advice so far, enter with the wind in your face and don't go in too far, and do it quietly. Make sure your stand sights have cover around you, 15' high minimum, and no cell phones, just sit still!
Hunt the transition lines wether it be vegetation, terrain, field edge, etc. Prolly the easiest way to get on deer with the least amount of scouting. And be sure to play the wind. Sent from my iPhone using Tapatalk