How to deter the pigs?

chicken wire fences maybe.?

Any type fence just run a hot wire on top. People do it all the time to contain cattle, etc,

Pigs will root~dig up around anything if they want at it.....do you have a dog? a BIG dog? One idea is to get some cd's/ tapes of their predators and play them for a few weeks....Coyotes, mountain lions (in Hawwaaii?) What are Puna Pig's predators???
Shit, get a little radio, strap it to a bush and piss everywhere! Paintball guns!!

may be moth balls, lots of them?

i'm thinking, go online to a hunting store, get some wolf and fox urine,bear if you can find any, spread it in the area, add some human to the area as well, then run a small electric fence as long as there is ZERO chance someones kid will hit it, if a kid sees your plants hey its just another plant to them, if a little kid touches an electric fence then will go crying to their parents. then u gotta worry about the parents coming to see what the kid got zap'd by

best of luck to you

you could also do what they have done for years in Africa...put lots of thorn bushes around your grow. Villages in Africa make thorn bush fences to keep lions, hyenas and other wild animals from attacking their domesticated animals. If it works for them then it will work for you

what kind of area are you trying to protect maybe a trench 4 foot wide 4 foot deep with the dug out ground over the protected side of the ground
use a plank for crossing urself maybe depending on the size like i say a good fence should work strong posts and wire mesh on both sides will prevent chewing a bit other than that i dont know i had an idea about growing in a tree maybe you can hang your pots off sawn off branches like hanging pot plants exscuse the pun

kill a pig near the site of your plants and make shore they see it. they have good memorys and will not come back . lol just fucking around maybe piss near your plants to mark your territory.