What DaWadd said, mini boards, drop them and it gives you some space.
I know, have a size 15, wide, and use combat boots, easy peasy.
Let me add this to it, I had Dan's DHS shift links, and they were good, had them on 2 F6B's, however now I have this mini floorboard on the current F6b and no DHS, and my feet fit fine.
But as you have seen posted some folks hate them, some love them, try it, you can always sell them .