The Code of Ordinances for water, snowmobiles and other recreational vehicles can be found by clicking on Presque Isle website. The ordinances are on the left, specifically Chapter 500:
501 Motorboats
504 Snow Mobiles
Quick Info
Operation Water Skis 11AM to 7PM
Operation Personal Watercraft 11AM to 4PM
No-wake-zones 200 feet of shoreline
Snowmobiles List of Presque Isle Roads that can be used for snowmobiles is found in subchapter 504 above.