well, after attempting my first Colorado bear hunt recently, I have learned a few things. first-hunting over a carcass works very well, second-it is a good idea to fasten the carcass to a tree if it is a good location, if it is not in a good location, move it to one, then secure it to a tree [the bears like to keep moving it]. lastly, it seems to help draw in the bears if the guts are punctured, either by accident or on purpose. the only bear activity that we have noticed in the past and including this year, was either a gut shot or accidently puncturing the stomach while skinning/quartering, the others that did not have the stomach/guts disturbed did not see any bear activity. hope this helps a little on your bear hunt next year. hunting bear over a carcass proved to be a ton of fun, and I will be getting a bear tag on my next trip to Colorado.