Here is a stabilized box elder duck call I recently finished. This is a double reed call that is all mallard. Most of my calls for this fall will be stabilized, not only is it weather proof, but the sound is all mallard. I also have some great cottonwood and hackberry that is stabilized.
Thanks for looking and may God Bless you.
Bill
(http://i651.photobucket.com/albums/uu240/crowellb_b/boxelderstabduckcall_zps8a630b4c.jpg) (http://s651.photobucket.com/user/crowellb_b/media/boxelderstabduckcall_zps8a630b4c.jpg.html)