I went to http://www.wallbike.com/ since this place was recommended very often in this forum. To my surprise they are 6 miles from my house! A forum member recommended I try the b67 sprung rather than trying a suspension seat post. I went in and talked to the guy (the owner was very cool) for a while, and he talked me into the b17 with springs. I can't wait to try it. My question is, how do you proofide the bottom? There is so much metal frame stuff in the way.
Here is a link to the style http://www.wallbike.com/championflyer.html