Aw man.....the story of my boarding life! Well until a couple of months ago. I've decided after so freaking many pairs of boots and a few boot fitters (one great one) that its all about the lace up system and being able to tighten specific areas of the boot. Look for one that has different zones, a pull lace for the inside liner, one zone that tightens down over the top of the foot, and one that tightens around the ankle. My Solomons do this and were heat molded to my foot. They also have costum made foot beds and panels of fabric around the ankles of the liners. Heaven!
If this is all old news to you....disregard. Im jut stoked to have ZERO heel lift when I've always had crazy issues. Boarding is a completely different experience with out it. Seriously.