The UM6080 was designed primarily as an adapter for mounting downriggers. When your downrigger is not in use, you can use that mount location for another boating accessory like a flush mount rod holder or a flag. The UM6080 is equally useful as a BBQ, bait board, or other custom adapter. The 4-hole pattern is a 2.5″ square with ¼-20″ threaded holes.
Downriggers will need the addition of Burnewiin adapter plates.
The UM6080 is NOT compatible with the GM400 Mount.