Laddie and I were out after the first series in today's Master test. :0(
Handling - Prepare yourself mentally in advance: If the dog is about to get into the same trouble you've seen several other dogs get into, don't let him get that far. Blow the whistle before he gets in trouble and spend the handle, live to see another series.
Training - You need to be able to use your come-in whistle when the dog gets into woods or high cover, he can't just wander around in there. Planned drill: plant a bird, have gunner blow duck call and fire shot but not swing arm, send dog past the fall into woods or high cover, use come-in whistle to bring dog back to fall.
So much to learn!