I have done several caches previously, and will do another one this summer. We will be completing a large figure 8 loop. We will be passing through the same lake 3-4 days later, why carry the end of trip food and booze the entire time?
Typically we do not hang at sites or portages though. We will find an easy to recognize spot on a shore, hang the food properly. I am more worried about humans than animals at this point.