Sandy River Spey Clave. Logo for the 2014 Spey Clave t-shirts. The Sandy River is in Oregon. A Spey clave is a large gathering of two-handed fly rod aficionados. The Sandy Clave is the biggest of its kind. When casting a Spey rod, one strives for a fluid casting stroke and the formation of a perfect “D-loop”. Unfortunately my D-loops aren’t perfect like the one in the logo.