So, this one story (novel) I read as a child. It was a around 250-400 page book with medium text size (and sketches on one every left page (almost). I only remember fragments of it. If anyone could help me identify it,
This boy uses a boat to flee to an island (supposedly uninhabited) not far away from his house. (He fled because of abuse from his alcoholic guardian, don't remember if it was his dad-not fully certain about this). He builds a shelter there and also comes back to the village for supplies on his boat (with his friend, the boat had a limited capacity, he had some friends with him, I don't exactly remember how many). Everything was going good but then one day some new visitors come to the other side of the island and he and his friends try to hide but the visitors find a piece of thread (which I think one of his friend -a girl- left behind while sewing something). I don't remember the story after that.
I'm not perfectly certain of the details but it's mostly correct to my remembering though.
Authors I remember reading to as a kid - Enid Blyton, Daniel Defoe, Robert Louis Stevenson, Jules Verne, Alexander Dumas, H. G. Wells, Rudyard Kipling, Mark Twain if that would give any hint.