I see that some of you confuse vortilons with wingfences.
Wingfence: Big and ugly thing (look at the SAAB Lansen wing)
Vortilon: Little and aggressive looking and usually sits in a group.
However, I could also be confused now I realize.
Is vortilon = vortex generator?
I know however that the 737 has vortex generators placed just under the leading edge of the wing but still on the slat. I guess that these are the ones that wobbelyprop was looking for but couldn't find.
Now that we're into vortex generators and such: Does anyone know why the 737 has vortex generators right at the fuselage end. The little gap on the fuselage between the elevator and the rudder is covered in them. Seems odd to me to put them there... but they must be doing some good eh?
regards/lns