Double glazed windows that open inwards and up and can be opened very quietly. Long enough for a full length camp bed and a comfy chair to sit. a veranda outside with a staircase up to it. Well insulated with wollen fleeces.
Easy enough to spend a night, even if well below zero. Got in at dark, started snowing and blizzarding hard , couldn’t see a thing. Curled up in sleeping bag and went to slip. About 2am the wind stopped and clouds went away. I awoke, hairs on back of neck raised, i could hear grunting. Looked out of the window and two big black moving objects in the middle of the maize. It took a moment or two to realise that the were both good sized boar.
Eased open the window. Centred cross hair on centre of shoulder. Yes a 50 year old Zeiss 6x42 with a 4 A reticle is designed fir the job and could see the boar clearly. Squeezed trigger. A big thwack as the bullet hit home. An almighty squeal and it rushed headlong into the wood about 30 yards from where he was. I heard him thrashing for moment. Text from German friend who was 400 metres away in another seat txt - good shot, solid impact and death squeal, but we will deal with him in the morning. Too dangerous to go looking for him in the dark.
I rolled over and went back to sleep
First light the others arrived with a truck. I found my pig dead at the bottom of a hazzle bush. Perfect shot. His skin is now on my study floor.