Salmon are not endangered in AK. Every stream is swarming with fish. Most rivers are undisturbed. Subsistence fish get passed around to family members etc. Outside of Anchorage, stores are expensive. Everyone puts up fish. they do shrink when smoked.
There are also Native hunting allotments. I have a friend who is a professional Proxy Hunter. He fulfills the allotments for Natives that are too old to hunt etc. I guess he gets paid by the State. He brought up his kids in a very remote section of Prince of Wales Island. You can't get more remote. it is like living with wolves. I know his daughter. Just like a story book fairy tale: she is a graceful blond that waltzes with the fluidity of someone graduating from a French dancing school, yet she captains her own fishing boat. her name is Mariah.
If someone just showed up at Sweetheart Flats with all the equipment but not knowing what to do they could try all day and they would be guaranteed to not get a single fish. You have to know what you are doing.
Here are some details to entertain you all during off-season. The Flats consist of a series of 3 small lakes each perched above the other and connected by waterfalls that salmon amazingly jump. My technique is to go in with a team of three. Climb through the muddy hills alongside the system to get to the top lake. Rope off the person handling the net to a tree so he or she can safely stay at the edge of a cliff far above white water. Another person is below the dip netter on a flat ledge. The dip net handle is very long, like 25'. The dipper moves the net through the white water and sweeps it up to the cliff downstream where the second person unloads the net. Hence, the net makes a big sweeping arc. A third person helps kill the fish and string them up.
When the fishing is done, everyone climbs into the pond to handle the fish which are strung with rope. By clinging to the rocks you slowly work your way downstream all the way to the first pond. The fish would be too heavy to drag over land.
At the bottom you clean the fish and if all goes well, no boar shows up. You get out at high tide as that is the only time that a skiff can be floated up the creek to the lower pond. A group of 3 people = 75 sockeye salmon. A lot of work but I am very quick as I fished commercially soon after college. Luckily I was grandfathered in for a limited entry commercial fishing permit. However, subsistence fishing is open to any Alaskan.
Even though everyone is armed when a big boar shows up in a constrained area it is time to tuck tail. The flats are about 50 miles south of where I live. A worse case trip would be where a boar is patrolling the place where you land a skiff. No fishing that day. There are usually sows around but they are no big deal. If you are not an Alaskan you will never see this place or experience it.