http://flyfishcalgary.com/board/index.php?...essential+flies
GRHE, pheasant tail, prince nymphs, SJW's, and some stonefly nymphs would also be useful at this time of year. Royal coachmans are also popular grayling flies.
For bulls, think big streamers like double bunnies and clousers in white, orange, and red to start.