this is the hardware that comes with the sidecovers:
http://www.redlinecycle.com/Sidecovers%20Aftermarket.html
some people think the screws look tacky, but i kinda like the industrial look. another advantage is you can get some longer screws, 1 inch diameter washers, and wing nuts at cdn tire, to lock the sidecovers in place. they can be removed only by unlocking and raising the seat.