Lumber supply store's can order dock foam also. Not sure which one up here carries it, but I used to order it at an Ace Lumber that was down in Houston. I'm sure if they could get it, then any Ace Lumber up here should be able to. Comes in large blue block's of it, bring your Pickup truck when you pick it up.
Hope this helps.
Edited by jeepthing (01/25/10 08:17 PM)