I don’t remember this being the case last year. I do know last year that if you were on the MN side you had to follow this regulation but it is worded differnt now.
Page 15 of the WI Regulations –
Quote:
Ice Fishing
Statewide fishing restrictions apply (see Page 7). Fishing holes cut through the ice cannot measure more than 12 inches across.The doors of enclosed fishing shelters must be readily opened from the outside while occupied; they may be locked only while not occupied and not in use. The shelter owner’s name and address (in English) must
be legibly painted or otherwise affixed on the outside of the fishing shelter with block lettering a minimum of one inch square and in contrasting colors. Fishing shelters that are occupied or otherwise in use are exempt from this requirement. Fishing shelters on Wisconsin boundary waters with Iowa, Michigan or Minnesota must display the name
and address on all shelters at all times, even portable shelters that are occupied or in use.
After the date for removing shelters from the ice, you may continue to use a portable
shelter, but you must remove it daily when it is not occupied or in use. Shelters must be
removed daily on the Fox River in Brown County from the DePere Dam downstream.
I better get my name on my Otter!
But thanks for the reminder – Do you think the DNR will catch on that there are 100’s of shacks out ther with Bret Clarks name on out there??? 
