Yea they can be hard to come by. I have my best luck looking in and around bedding areas, feeding areas,and ,funnel. What i normally do when i go out is check out all my stands and then walk around them to check for sign from the previous year and thats how i find the majority of mine. They are tough to spot at first and i have walked past numerous sheds and found them later during gun season but once you find a few they become easier to see. I like going out and learning where the bucks and deer were last year and the sheds are just an extra bonus. I wish you luck in your future outings and just don;t give up, keep your eyes open, and walk slow!