All we need to solve the illegal fishing issue is a an affective coast guard and navy. Heavy punishment for foreigners caught, give them the death penalty.
Although they are numerous, they mostly operate small shows which is why dozens have been detained by SL/PL authorities and hundreds captured by pirates over the years.
I agree they should be executed but what about the large Asian and European trawlers (but less in numbers) who steal our fish and dump waste? Some of them also employ private security that are merciless towards the miskeen fishers.