No person may place any trailer, camper, shelter or tent from May 1st to November 30th at any public campsite maintained or authorized pursuant to section 1825, subsection 4 and keep that trailer, camper, shelter or tent so located, vacant or occupied, for more than 14 days in any 30-day period. Persons already having placed a trailer, camper, shelter or tent at such a campsite for more than 14 days shall remove any such item and leave at the request of the commissioner, the commissioner’s designee or any fish and wildlife warden. [PL 1997, c. 678, §17 (AMD).]