Beer coozy?! Are you kidding? Is that as uncomfortable as it sounds?
As a fellow skinny person, I feel your pain. I had a difficult time finding boots that fit right until I found the Salomon Falcon CS Pro boot. This boot was made for us skinny folk looking for a high performance boot. If you get the CS version, you can custom mold the liner AND the shell.
Because I like a stiffer boot, I ski in the Falcon CS Pro with the 120 flex. But I believe they also made a 90 flex Falcon CS as well if you like a softer flex.
Time to take those beer coozies out, untuck your jeans from your boots, and buy a pair that acutally fits!