When i go to watch the racing, i usually visit the northern tracks (for obvious reasons) and i therefore tend to follow the northern trainers. Particularly Richard Fahey, Brian Smart and Mark Johnston. I do pay close attention when the big trainers from the south send their inmates up this part of the country and, as you point out Spicerack, form is key and i do take note of in-form stables.
Not done me a great deal of good today but i've had some very good bets up on the football - all of which were posted on the racecaller site. A 23/1 acca in the Japanese leagues this morning, a decent win single in China and the Super Clarets to draw at Anfield with both teams scoring.