Along with Jobbie Nooner, the Raft Off is one of the largest boat parties in the USA.
The World’s Longest Raft-Off is an annual event held in Muscamoot Bay, Lake St. Clair, Michigan always on the 2nd Saturday of August.
The coordinates of Muscamoot Bay are N 42.55783 and W -82.66071
Some 60,000-100,000+ people attend.
Boats line up side by side and tie-off together, forming an arena called “The Gauntlet” in shallow water where people can walk around or cruise around on floats in.
The Gauntlet stretches for about 2-4 miles long.
DNR Handbook of Michigan Boating Laws & Responsibilities
Yes, some boat-less attendees take Champion’s Auto Ferry from the mainland of Algonac, Michigan to Harsen’s Island, Michigan.
They park their car on Harsen’s and just walk out in the shallow waist-deep water to the Raft Off, however, understand that the last couple of years they have cracked down on this.
Do not be surprised if your car is gone when you get back. They have started towing illegally parked cars and will ticket/arrest you if you cross private property on the island. Please take a boat.
The Raft Off is a fun time!