I have 1 dz G&H floats that you attach to the bottom of thier std sized shells, be it a Snow or Canada. They fit all G&H std shells. You can get double duty from your shells, can be used in the field, or of you have sheet water or a pond, you can convert the field shells into floaters. This is a lot more compact than lugging around bulky floaters. And the keels come off the float for a more compact storage.
Here is what they look like. http://www.ghdecoys.com/accessories-floats.htm
The 12 that I have are in excellent shape. New is $90, $65 for 12 + S/H. or 6 for $35 +S/H, .
Please PM me if any quesstions.