Okay, I've had nothing but problems with Canada Post (and I am NOT the only one). I'm curious, as to how we could make it work especially for our lovely 8 months of coldness

(face it, only summer is warm anymore!)
Now, personally I will be doing trips to Edmonton once a month, splitting delivery/gas costs between each buyer rather than one person driving to me (more cost) or driving every week (more cost). I may increase the range to Edmonton, Calgary, and everywhere inbetween perhaps. (Dunno yet)
But it still brings the question of HOW to get fish alive to BC, NB, ON, etc? Even the best heating packs CANNOT offset a full blown chilly winter day. If it werent so expensive I would just travel x)
Does anyone has any suggestions, or would be able to work with others to get things done a bit more smoothly? A finely packed box, just does not seem to cut it anymore. What can keep all heat and cold outside, while the heat remains inside? Would something like tin foil work? (Throwing that one out there)