Points of sail, no-go zone, and apparent wind.
Fast trim: neither luffing nor stalling; watch the telltales.
Turn through the wind with minimal loss of speed.
Manage boom crossing and keep the boat balanced.
Feather upwind, bear away downwind, and stay smooth.
Balance pointing vs. speed for best progress to windward.
Sail deeper or hotter depending on wind and sea state.
Control power with trim and heading to keep foils efficient.
Regain flow quickly with coordinated trim and helm.
From standstill to steady motion, and back again calmly.
Use visual cues to anticipate power changes and shifts.
Simple fixes for issues that slow you down.