As I have done for the past 40+ years, spent the last day of the year getting ready to celebrate the coming in of the New Year under the icy covered waters somewhere in Michigan.  Round Lake was our alternate site since our planned location on Magician Lake had insufficient safe ice to support a group of divers and tenders with heavy scuba gear. At Round Lake we first cleared a path out to an area deep enough to dive. The chain saw we were to use for cutting the ice became inoperative while making the initial cut and we had to complete the job manually using an old fashion ice cutting saw.  We then set up the boundary markers and tape to identify the area warning  snow mobiles  & ice walkers of the open water hazard.