Other park studies show personal watercraft do damage air and water quality and public health, and interfere with visitor enjoyment. The best solution may be to allow personal watercraft in some areas and to ban them in others, especially those close to shorelines where children play. Jet Skis and personal watercraft users brought some of their opposition on themselves. The manner in which dirt bikes on water are used has created popular outrage among those who don't like the sound or the air and water pollution. The park service always walks a fine line as it performs its dual mandate to preserve and protect areas for future generations, and to provide for today's visitor use.
Personal watercraft are clearly a mismatch in national parks.
They have to prove their case if they are to fit in at national seashores and recreation areas.