Let's Reduce the Lift Drag of a Wing, Part 2

In part two of trying to find ways to reduce the lift due to drag of a low to medium aspect ratio wing, we revisit part 1 and then try out various wing tip shapes to reduce the drag. I think that we found a possibly good wing tip.
Aerodynamics and Airplane Design Books you can buy:
Simplified Aircraft Design for Homebuilders, Danila P. Raymer: amzn.to/32V4oYJ
Aerodynamics Aeronautics and Flight Mechanics, 2nd ed, Barnes W. McCormick: amzn.to/3cmkEoO
Theory of Wing Sections: amzn.to/2RQDf2W
Aircraft Design: A Conceptual Approach, Danial P. Raymer: amzn.to/3clYV0a
Ultralight Airplane Workshop Links:
Patreon: / ultralight_airplane_wo...
Facebook: / ultralightairplanework...
Website: www.Ultralight...
Aero Design Terms and Resources: www.Ultralight...
FAA AC 103-7: www.faa.gov/do...
Xflr5 software:
Music: www.bensound.com
Disclaimer: If you use any of the information that you see on this video on a project of your own, YOU become the engineer and responsible party for your project. It is possible that miscalculations were made in the production of this video. Since you are now the engineer for your project, you must verify the information that you use.

[@pulsarspacetime]

Thank you for all work and dedication. Highly appreciated !!

[@philipmorgan5050]

Too complicated for my dumbass, but you have a lot of smarts and I enjoyed.

[@allenflight2575]

Thank you for all the great videos. Please check out how I reduced induced drag on my Sonex.

[@Designer103]

I can't seem to find much information on the Sonex wintip mods. Do you have a link that would help?

[@allenflight2575]

@@Designer103 ua-cam.com/video/Qw9xwr1Hhvk/v-deo.html

[@allenflight2575]

ua-cam.com/video/uM1XrQ56hyo/v-deo.html

[@Glicksman1]

Regarding the short, dihedraled tip, what percentage of the total wing area are these?
Thanks for such a pleasant aerodynamic tour.