[FT PBeM] question

Can anyone offer advice on how to do fighter extra movement in
a PBeM game?

The problem we are encountering is in a face to face game fighters
alternate movement and breaking off gets free shots so...

If I move first I can move my interceptor to be in contact with
your standard fighter squadron.  If you then move that squadron
I get to wipe out 80% of it with no return shots, obviously I
have just locked that squadron in place.

How do you simulate the alternating fighter movements in PBeM?

Roger