Originally Posted by Blazin' Raisin
I'm also a size 13 and ride wide boards. I haven't tried any mid-wide boards, but the only thing you should look for is toe and heel drag. If you're set up in a mid-wide board and you're hanging over, you should go wider.
No overhang will actually make the board more difficult to turn. You want a little bit of overhang (more on toes) to have the easiest turn initiation. More than 1-1.5 inches of toe overhang can cause issues during hard carving. You really don't want more than 0.5 inches on the heel.
Think about where the most pressure is when you stand on your toes. Is is right at the end of your big toe? No. It is at the ball of your foot, the big padded knuckle of your big toe. The closer you can get that spot to the edge of the board (about an inch behind the tip of your boot), the better turn initiation you will have and you will have better/quicker/finer motor control over the board.