Another thing we look for with fat, powder-specific skis: How they perform on airs, pillows, steeps, and other natural features. Are they stiff and planky or soft and light? Do they have a wide, stable platform for landing airs? Are they playful and forgiving (which would be helpful for advanced skiers looking to improve their powder skills) or burly and uncompromising (which would be ideal for strong experts). Here's tester Mike Britt, putting some Fat-ypus skis to the test.