As Chimbu Chuckles says, this kind of thing is standard practice in some places if you have a lot of stick time and cojones of titanium:
http://bigrockslongprops.com/media/preview.wmv
And here's a whole discussion on the issue by those in the know, including some rather irascible contributions by someone who I think is our own Chuck Ellsworth, the Catalina pilot who used to contribute here:
http://www.supercub.org/phpbb2/viewt...ghlight=videos
QDM