GW did a hard job above.
Anthony's suggestion of the Crosswind flying book (I believe Don's hobby has them, but I never had a chance to buy one).

I am only in the Intermediate level and am definitely not an expert at all. I saw your posting right after it was posted, but wasn't brave enough to reply.

Also, it is beginning of contest season. The response time may get a little longer also. If I can, I would go out to fly rather than staying up all night looking at this computer screen for more than 8 hours a day!!

I also post reply to what I think I know. Otherwise, I mostly read.

Anyway.
here is what I try, but have not always been successful because of less time to practice and different conditions. My local flying field has cross wind almost every evening.

Suppose you are flying from right to left, upright.
Crosswind blowing from your back.
If you don't use rudder, your plane will gradually (depending on how strong the wind is) get pushed out if you keep the plane straight along the flight line.

So, the prevent the plane getting far out from the flight line, I keep slight left rudder. If you look at the plane from the top, its heading will be slightly inward.

it will be opposite when you fly back.

Not all plane fly same way because of different design and wind penetration characteristics.

My plane get pushed a lot because of large flat sides.
The surface area of vertical stab and rudder also make differences.

Speed of the plane also makes difference.

So, PRACTICE! PRACTICE! PRACTICE!!!
With a COACH or a CALLER who can tell you if your plane is moving inward or outward.

When I concentrate on my plane, I often forget where my plane is heading. :stupid:

Was my explanation correct?

Please!! Correct me if I am wrong.

Hmmm, I always write too long.