hi
All these tactics would work if F15 pilot is stupid and go directly to you even if you fire at him.
Good F15 pilot with expirience is hard to beat with SU27! F-POLE would work just if he keep going toward you, if not you would just fire that missile away...
I usually let him fire first then I turn oposite and after several seconds turn back, than he would be closer to you but you can fire R27ET and than make another distance from him and all that just to make him fire as much missiles as possible and keep distance from him as much as possible too!
When you have more missiles than him you can play with F-pole tactics but dont let him come close to you!
This is one of my old tactics but they still work sometimes. Dont except to beat him for 1-2 minutes. Very often, against my teammates, I play and more than 20min.. :o