Yea Big feet kill the board selection real quick. I heard Never Summer boards are great for big feet although never ridden them. Thats just what I was recommended alot when i was first shopping. I know burton classifies width as a feature, only cause thats why I ride. Im sure the other companies have some system of doing it too.
Burton says their mid-wide boards are designed for the 10.5 boot
http://www.burton.com/mens-snowboard...prefv1=Midwide
The actual Wide boards actually have wide in the board title like Custom Wide (which i wish they would have had when I bought mine)
http://www.burton.com/mens-snowboard...re&prefv1=Wide