Stealth, wild camping is an art and a good skill. I love doing it. But generally it is good to find a good spot before dark, don't be seen by nobody, away from paths(not too far, just that if someone goes there won't see you), away from hunters lodges somewhere hidden with good terrain. That makes a good sleep, just be quiet and unseen like you weren't there and leave in the morning.
In the mountains could be problematic to find flat hidden forested areas, so it is better to find spot earlier and then pitch a tent. Good terrain in dense forest is the best, but I also use abandoned forestry roads, where nobody hasn't walked for a long time(you see the vegetation). The terrain there is much flatter and easy to pitch a tent. Usually hunters are lazy and don't roam forests at night, they just sit in the cabin or some open spot with a lot of grassland. That is why don't use lights at night and pitch it in dense forest and you get best sleep, nobody knows you are there. Also it is good to pitch it a away from houses, farms, because forestry workers could wake you up in the morning, just use some common sense, will anybody be working there or not? If not ok.
It is good to talk a little at dusk or the first hour of night. One time I pitched a tent in the middle of the forest and animals were so loud around the tent. One animal panicked and was making squeaking noises so annoying and walking constantly around the tent. Then I used a light and the animal went away, but then returned again. I started to whistle to counter the animal and then the animal got upset. The animal charged my tent and when it hit the outer wall the animal stopped. That was a bad night with bad sleep, the animal again returned in the morning and started with that annoying squeaking sounds and then again retreated. Some animals are so territorial and when there is somebody on their territory they get loud and upset.
I learned that night that animals usually don't know there is a person inside a tent. It is good not to scare or provoke them. For that reason it is good to speak a little with normal voice so animals know you are there - that you are human and then they will leave you alone for the rest of the night and of course use ear plugs. But let then know you are there by speaking a little. If you are in a bear country don't provoke/ fuck with the bear. You don't want bear to feel threatened and starts charging towards you. Talk a little in a quiet human voice and then animals know you are there and will leave you alone.
I had some nightmares about the bears when wild camping, that ones are not good, but they are rare. On my last longer trail I wild camped 14 days in a row. The more you do it the easier it gets. I wild camped near cows pastures, near houses, or roads, on hiking trails, in the middle of pasture, I sill need to wild camp above 2500 m, but it is too visible to the helicopters of mountain rescue team. I prefer to stay hidden. It is better idea to camp lower where the temperatures are higher.
It is not good to camp it the open spots if there is a lot of wind. Wind against your tent all night makes a terrible sleep even if you use ear plugs. So pitch it somewhere with natural protection against wind.
If there is a danger of summer lightning storms pitch it somewhere not too high up, not on exposed ground but it is better lower with more large trees around it.
I am also for camping under trees because you get less condensation. The tent has to be properly placed, tightened so there is enough air flowing in and out - that prevents condensation.
