dougie, the tip vortex comes about because the pressure on the windward side of
the sail is greater than on the leeward side. The greater pressure tries to
make it to the lower pressure. the air on the heavy side rolls over the aft
edge of the sail in the easiest possible manner, which includes going up as
well as back. This makes for the vortex as the aft edge of the sail meets the
forward edge.

having a main sail downwind of the jib does not cause the jib airflow to stop
trying to go from high pressure to low pressure. The vortex generated causes
turbulant air from the jib to screw up the airflow across the main. moving the
top of the jib lower than top of the main just causes the jib vortex to hit
more of the main.

okay?


JAXAshby wrote:
you asked a question,

No, I asked at least two. I knew you were math-impaired, but I didn't
realize that you could not count to two!

.... and yes or no were the correct answers.

If that is true (seems unlikely in view of your knowledge level) then
please explain why.

DSK