This weekend I installed a Moose Racing Expedition luggage rack on my KLR 650. This is the bike that our U.S. Marines use, but they are converted to diesel for them. These bikes eat Baha and suburban potholes and curbs. I repositioned my turn signals with a little splicing and heat shrink tubing, and raised my license plate a bit, also. On the top rack I needed to affix one of three Nanuk 930 hard cases. There were no provisions for doing so. I decided on using 8 1/2" I.D. rubber coated hose clamps with stainless steel hardware. I drilled through the cases and secured them with round head Allen bolts. The case is still waterproof. It looks great and you can hardly see the clamps.
The side cases are 930s also, but they are removable as well as lockable. Pull up on a sturdy pin and off comes the case with the permanently attached frame part intact. I like the Nanuk cases more than others for this application because of the sturdy and cool latches. The ingenious design clamps securely and ensures watertight integrity even when overloaded. The handles also fold firmly against the case body and do not flop around. All Nanuk cases have a lifetime warranty, and they should be a lot better known than they are. I'm waiting for their development of a hard gun case which I will happily test with all the abuse I deem normal.
Tinker helped through most of the process.