What would you do?

Sorry topher miss read my bad . Still wouldn't use , not mine .

Move out of that area, I am not going to spoil someone else's hunt

The answers given by the posters of this thread shows you guys have good hunting ethics.

This year, as in the past, my problems have been with non resident hunters who show up for a weeks hunt and move right in to our setups and hunt within 50 yards of our site. They find the bait and go down the deer trail and set up under a tree.

I would keep going. but that's mostly based on land quantity. i know that i don't have to crowd anyone where i hunt, so i will just move along.

Yup, I would just move along as well, they were there first, as long as they are hunting it ....

Move along. You never know whos hunt you're ruining and what kind of mood they're going to be in once they see you there.

If that's the case I should be able to set up my duck blind on public land and to be able to use it at my leisure all duck season. However it is an understood rule, if you build a duck blind on public land it's yours for opening day only. If you come back the next day and find it occupied, you leave, and find somewhere else to duck hunt, in a location that will not interfere with those using the blind that you spent your time and sweat to build for opening day. Having come across some pretty unsightly messes on crown land, the notion of "Leave no footprint behind" rates at the top of my hunting ethics, as it should all hunters. If I came across what you have suggest on public land, I definitely would not hunt there, however I would immediate report the situation to the MNRF, I'm sure they might like to talk to whoever left things behind. Yes, there is always one of us out their, so make sure you cleanup when you leave.
If you wish to monopolize a piece of land, you would do well to get a deed for it, that way you get an added opportunity to deal with those, who have difficulty understanding the meaning of No Trespassing signs.

You don't stop hunting because you grow old. You grow old because you stop hunting.
- Gun Nut

This is a no-brainer. Move along. One never knows if the pop-ups are occupied. Walking up on someone's watch? We've all,at some time,had some doofus walk in on us and bust our hunt,even when they can clearly see us. There's no excuse for such conduct.

Yup walk on by.

Maybe its my age or my location, but I would probably unload my gun, leaving the action open and have a seat while I waited to see if anyone showed up. If so it would give us a chance to chat and compare hunts if they were so inclined. I can always leave after they show up if I'm not welcome.
Most of my life I have fished and hunted lonely areas where strangers normally stop and chat, comparing and learning about the area.