Many cities and counties have failed to come up with any lists at all, creating a legal gray area, and leading to disputes such as the Coast Guard trying to shut down kayaking activities in a location without being able to show any legal basis to do so. Old hands familiar with the ins and outs of the rules can generally stay on the safe side, but newcomers may find themselves in over their heads.
而許多縣市沒有表列的禁止區域則成了灰色地帶，常常發生海巡署人員要制止獨木舟活動，卻又拿不出法源根據的爭議事件。