So I'm having an argument with a mate about how to properly adjust your trim strap while out on the water..

Where we kite at this time of year the wind can be extremely variable. Its not unusual for the wind to swing between being at the upper limit of the kites wind range down to the lower limit of the kites wind range several times in a session. Im always on the trim strap trying to maintain the perfect trim so that my bar is where I like it with the kite powered up nicely with my elbows only slightly bent.

Here is his interpretations of what the trim strap should be set at vs wind speed based on what he was told by an instructor:



And this is my interpretation based on personal experience (never had lessons):



So, which one is correct? Or are we both doing it wrong?