Yup,
Posted by: pgeorg
on Oct-10-12 3:07 PM (EST)
-- Last Updated: Oct-10-12 3:09 PM EST --
Same experience here. And, here's a link to the aforementioned truss hangers. The flat edge goes under the gunwale. You can make 'em yourself.
http://www.edscanoe.com/seathanger.html
Peter
P.S. You're also lees likely to break the bolts with truss hangers as the do not flex much.