Do you have saddle bag supports already?
Just extend something from the bottom of the support down far enough to reach the bottom of the bag and then out so that they act as a support to hold them up.
You could always just make your own saddle bag support brackets, like Tonckawa did, and modify the design to work as a lift as well:
Custom Support Brackets:
viewtopic.php?f=34&t=961&p=6666#p6666
See here as well, "
$12 GZ250 Saddlebag Supports"
http://www.motorcycleforums.net/forum/c ... -made.html