Why spend the extra money when the law clearly does not require a tag?..I've been into many other states pulling a boat, Oh, TN, SC, Fl...and never had a problem, I did get pulled in ohio and then the officer came to my window and said "ohh I just realized you were from KY...have a nice day!" If its not required by law why spend money on it, thats my view...especially having no previous problems!