Joined: Nov 2007
Posts: 620
Likes: 7
From: Anchorage, Ak
Bikes: 2015 Calfee Tetra tandem,2016 Calfee Tetra Adventure Tandem, Ventana ECDM 26 mtn tandem, Ventana ECDM 29r full suspension Mtn tandem ,Ventana Fat tire tandem, Calfee Dragon Fly, Santa Cruz Carbon 5010, 907 Whiteout fat tire
You might look at a Sella Anatomica saddle as they have very long seat rails which tends to mitigate the need for a setback seat post. We know of several teams whom use them with thud buster seat posts.