If im slowish and speed disparity is large, the simple flat sissors works well or barrell-roll defense.
If im fast, rope-a-dope is my trade-mark. Or just run for a while and watch em dive to get the speed to keep up with me, then i slowly climb a bit then level out a bit for a bit more speed (320+), if they are still following, zoom climb for a simple rope-a. Or wait for them to give up, then run them down.
Didnt your mummy tell you that chasing mustangs all by yourself is a dangerous game?