..... and I carry a small north face backpack for everything else.
+1 on the backpack! Much better method than a rack and more comfortable than a trendy messenger bag. And North Face is the best. I have a mountaineering tent, sleeping bag and small backpack that are more than 25 years old and still in great shape. I've used the backpack for both bicycling and motorcycling. Sure beats strapping and unstrapping stuff to a rack.