Hellos,
I am very new to permaculture, have very little experience farming in general, but am very eager to try it out.
I have a momma in South Korea who has a few acres in the mountains. She told me that chemical based agriculture in the past had destroyed the soil's fertility over several decades. Within the last 7 years she had nurtured the soil where there are now lots of worms thriving in the soil, whereas before there were none. I am very interested in helping her out, especially after reading about Mr. Fukuoka's work (along with some information shared by Helen Atthowe about veganic permaculture that I ran across).
I plan on spending some time on her land around May and help out for several months and have been researching stuff and browsing this forum to get ready for that endeavor.
So for now, I have no idea how to deal with the following problem she shared with me. She let me know that there are wild piggies in the area and they like to raid her crops at night.
I am really interested in the "growies" aspect, and have no clue how to deal with the "critters" aspect. For now we just want to grow vegetables to sell and have not really considered selling natural bacon. Has anyone encountered problem like this before, or know some solutions to this sort of problem?
I liked Helen Atthowe's thoughts of nurturing a food chain where every organism has a place, but also kept in check by a food chain of predators. She mentioned how moles appeared on her farm once, but later snakes and coyotes appeared as well to take care of that. I'm not sure what I could help introduce to control wild pigs though, mountain lions come to mind but that seemed pretty risky.

My mother let me know that some farmers in Korea uses electrified fences but is that a good solution?
Thank you in advance, and I look forward to researching other people's experiences and knowledge on this forum.
Best regards,
David