Home built Pontoon boats?

[Bearhunter]

Hey just curious if anyone has built there own Pontoon boat frame.  I just boat a set of Skookum steelheader 10ft 20in cataraft tubes.  Im looking to build my own frame with a stand up platform.  Has anyone ever done this before.  Im looking for some advice, like pontoon spacing or maybe a place online with frame plans?  Thanks

[jackelope]

bearhunter...there's nothing specific, but a lot of info if you surf this forum.
http://www.washingtonflyfishing.com/board/forumdisplay.php?f=47