Yeah, length depends on the board type. Though some people will recommend a wide board for size 12, 25.4 is wide enough with size 12 depending on the boots. 2 of my boards are normal width (25.4), the other is a wide (26.1).
My burton hails and freestyles are pretty much fine on 25.4. Some boots may be longer than mine, the hails are designed to be as small as possible to minimize foot drag on larger boots I believe. According to the charts, my custom x should be a wide version but I don't think I would enjoy that board as much in a wide. On a more freestyle oriented board, like my parkstar, I like the extra width.
Also, I ride bindings with canted footbeds which help just a little more. I hardly ever catch on my custom x, just occasionally on sloppy spring crud.
Last edited by vajohn; 01-28-2014 at 08:20 PM.