ASA  &  North U  Join  Forces

to present a series of Sail Trim Seminars

Why North U?

Since 1980 North U has been the most prestigious organization in performance sailing education in the world. Their programs offer the latest in sailing techniques in an engaging interactive format that makes the course fun and effective.

Why ATTEND a Seminar?

Seminars are a great way to spend time with fellow sailors. No matter what boat you sail, the North U Sail Trim Seminar is for you - it's always more fun to sail fast. North U Seminars feature great instructors – expert sailors with years of teaching experience.

What Will I Learn?

The North U Sail Trim & Boat Speed Seminar covers sail trim on all points of sail. Upwind topics include jib trim, mainsail trim and helming. Downwind sections will cover symmetric and asymmetric spinnakers as well as tips for those who sail under jib and main only.

Course Outline

Boat Speed & Sail Trim Seminar

Sailing UPWIND

Sailing efficiently upwind - against the force that drives us - is a marvel of modern design. The North U Trim Seminar provides fundamental understanding of the forces behind upwind sailing as well as nuances of trim to optimize upwind performance.

North U SimulatorNorth U Sail Trim Simulator

Upwind topics include mainsail and jib trim, helming, and a special Trim Solutions section to solve the most baffling problems in upwind performance. The Trim curriculum shows how angle of attack, depth, and twist combine to control upwind power, and how to change trim to improve performance. The interactive Sail Trim Simulator allows you to see how changes in sail controls change sail shape and performance, while video clips show real life trim and performance technique.


Sailing downwind is easy. Optmizing downwind performance is tricky. Downwind sections of the Trim Seminar cover both symmetric and asymmetric spinnakers and show how the coordinated efforts of the full team provide subtle but critical improvements in downwind performance.

Sailing DownwindSailing Downwind

You’ll learn how to control and optimize spinnaker shape with refinements that take you beyond the basics. You’ll also learn how to coordinate trim, helm, and crew weight to sail faster, deeper, and with more control.

We also cover differences in design and trim technique that distinguish symmetric and asymmetric trim. Plus we cover non- spinnaker trim for those who like to sail under Jib and Main only.

Fast Faster Fastest

The differences between good and great trim, between OK and fast boat speed, are small and nuanced. Kick your speed up a notch at the ASA / North U Sail Trim Seminar.


  • Race & Win
    • The Racing Pyramid
    • Performance Analysis
  • Upwind Sail Trim
    • Theory in Brief
    • Goal Oriented Trim
    • Angle of Attack, Depth, and Twist
  • Genoa Trim
    • Lead the Boat Upwind
    • Total Power Trim
    • Genoa Shape and Controls
    • Power, Angle of Attack, Depth, and Twist
    • Trim, Speed, Balance
    • Target Boat Speed
    • Matching Trim to Conditions
    • Coordinating Trim to the Helm
  • Mainsail Trim
    • Follow the Leader
    • Trim, Speed, Balance
    • Total Power Trim
    • Mainsail Shape and Controls
    • Power, Angle of Attack, Depth, and Twist
    • Target Boat Speed
    • Trimming to Point
    • Trim for Speed
    • Wave vs Smooth Water Trim
  • Helmsmanship
    • Target Boat Speed
    • Trim, Speed, Balance
    • Steer by the Telltales
    • Do NOT steer by the Telltales
    • Calling Trim from the Helm
  • Trim Solutions
    • Performance Problems/Trim Solutions
    • Pointing
    • Speed
    • Light Air
    • Heavy Air
    • Chop
    • Binary Power
  • Spinnaker Trim
    • Initial Spinnaker Trim
    • Reaching Trim
    • Running/VMG Trim
    • Light Air & Heavy Air Technique
    • Pole adjustment
    • Helming
  • Asymmetrical Spinnaker Trim
    • Initial Asymmetric Trim
    • Reaching Trim
    • Running/ VMG Trim
    • Light Air & Heavy Air Technique
    • Tackline Trim
    • Helming
  • Wing & Wing Trim
    • Pole Position and Air Flow
    • Sailing Angles
    • Leeward Pole Reaching
  • Conclusion
    • A Tactical Wizard

What to expect

As the student you should expect the following...

TOP Instructors

Not every great sailor is a good teacher. North U seminar leaders combine outstanding sailing skills with years of teaching experience. The focus is on your sailing, not their sea stories.


Written by Bill Gladstone, the North U Sail Trim Book covers every facet of sail trim, boat speed, and boat handling. Sections on Trim Solutions solve the most baffling problems in performance, while the boat handling sections show how you can turn your crew into a cohesive team.

Snacks & Lunch

The seminar will include refreshments during breaks, such as coffee & snacks. Participants will also have the option of buying lunch when they register. 


Event organizers will be implementing all health and safety laws, rules, and regulations required by state/local authorities and employing strategies to encourage behaviors that reduce the spread of COVID-19 among staff and attendees.


Upcoming ASA / North U Sail Trim Seminars

Saturday July 10th, 2021
South Coast Sailing Adventures
Kemah, Texas
Register Now!
More Dates & Venues Coming Soon...