The ruck idea sounds good. Have to check out the OpSacks. Keep in mind you will still have the snacks out during the day and that smell or the smell of dinner will be on you. Even the smell of deodorant will attract them. Also, cooking/eating meals a safe distance from the tent is a good idea. Review the rules for backpacking/camping in Yellowstone or Glacier. They may seem a little fanatical, but gives you some ideas to think about. If there has ever been food in a container they want you to put it inside your vehicle, which won't stop a bear if he wants it. Taking all the precautions is good, but have a plan should one decide to check you out anyway.