You could throw a little money at the problem and get some counter surveillance by setting up a motion-capture hunting camera(s) around the area where LEO would have to park and approach your site. Let it run for a week or three and go scan all the pictures before making a decision. I'm sure that in a couple of weeks you would know with 99% certainty if LEO has taken an interest.
I'm truthfully torn about 50/50 on if I personally would return or not... But if I did, it wouldn't be without a period of conducting counter-surveillance. =P
Oh by the way, I was at a parking area today about to take a hike to a site. It looked like it was going to storm so I just sat in the car for a bit to see what the weather was going to do. Apparently there was a park service officer watching me in the parking area because as soon as got out of the car to get my backpack out of the trunk, I heard an engine start close by. Which freaked me out because I only park in the area if no one is there... so I nonchalantly went back to the driver seat and grabbed my camera. Sure enough, a park service officer pulls out of a recessed area behind some trees and pulls directly up to me just as I'm putting my camera around my neck. Thank God he didn't sit there and watch me longer because within a minute I would have been putting a couple of little plants into my backpack from the back of the car. lol
He must have thought something was up though because he stopped, got out and asked a lot of questions about what I was doing. I'm pretty sure I came under scrutiny just because there had been some car burglaries at that parking area recently. Live and learn I guess.
I'm not going back to that site until October though.