Just found an issue whereby whenever you move a shellfish trap to another location, you can build one almost directly next to it (however if you try to move 2 traps next to each other it shows the 6 block difference being required) i'll leave a screenshot link of it's final result below:


https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=1562444113

I am unsure if this is possible with the fishing nets but i'll update you on that later.