When running in light to medium airs you may sometimes find the Laser goes faster with the boom let out to only about 80 degrees so that the winds flows across the sail from leech to luff.
When running in heavy airs do not be afraid to sail by the lee and, you may even find letting your boom out past 90 degrees on occasions may make the Laser a bit more stable. And it may even save you a gybe. Do not be afraid to experiment with the ‘unconventional’. Laser racing is seldom boring.