My dad and grandfather were fishing out of an ice shack like 20 years ago, a warden knocked on the door and asked to see them. They had 8 traps out plus the two of them were jigging so it's perfectly legal. My grandfather dropped his jigging rod and walked out side with my dad and closed the door. The warden proceeded to open his summons book and write a ticket for unattended lines. My dads said that being in a shack was legal even if they had traps out. The warden busted my grandfather for leaving his jig in the water and closing the door. I couldn't make this up if I wanted too. Be VERY careful.