Make these mental notes about the weather mark:
Before the Start
Check the current at the weather mark
30 Boat Lengths Away
What will be the last wind shift or puff (left or right?)
20 Boat Lengths Away
Get a lane of clear air to approach
Decide to approach on Starboard or Port based on last shift advantage and where the crowd is developing
10 Boat Lengths Away
Stay out of the crowd, if lots of boats on starboard set up well above layline
If approaching on Port, decide early how to pick your way through the starboard tackers
Remember the current!
Final Boat Lengths
Note where the puff is and what shift is on (left or right)
Position yourself so you can jibe onto port for a right shift or begin the downwind leg on starboard in the left shift