Y'all have convinced me that I should go to the Beartooths, above treeline (it wasn't hard). I have an Ursack. I also have a Garcia Canister. I'd rather not take the canister, as it weighs so much, and is hard to wrangle into the one pack I have in which it fits (Lowe Contour III, vs Granite Gear Vapor Trail or Granite Gear Nimbus). Is there a way to attach a Ursack to rocks, or otherwise use it instead of the canister? Thanks. Pringles