Try and break this down based on a foids X/10 rating.
5/10 or under you could get away with rape they would see it as a very nice surprise for them.
6/10 5 minutes chat and the cockney knee trembler down a back alley and they would really appreciate it.
7/10 Same as 6/10 though you may need 20 minutes of chat and you will have to be reasonably tactful/polite. You'll be fine being your normal self. This will leave you with enough time to 'do the deed'.
8/10 You would have to play a longer game here. You would chat to them for say 30 minutes though and just be your normal self. Then give them your number or other contact details so you can chat on online or via Skype or whatever. Give it about a week and you should be able to arrange weekly visits for 30-45 minutes of full sex. Making sure to leave before you revert back to your normal abominable incel form.
9/10 The same as 8/10 but you will need to learn some chat-up techniques and PUA. The only instance where this will come in useful. Your regular personality may not cut it as these women can get a 10/10 man anyway and those natural 10/10 men have bit more experience with the 'fairer sex' than you. Confidence would be key here.
10/10 Potentially possible if you apply the 9/10 technique and refine it to an art. Though a 10/10 woman would want a long term commitment as you would be a trophy for her. She probably wouldn't be satisfied with quick one up every now and then. Though with persistence you will likely get to 'dip your wick' at some point. But it will be very hard work and she'll pester you. So this would be a one of kind of thing if you can manage it.
So it depends exactly on the quality/quantity of prey you want to devour in this form. If you draw a circle around the 7/10 and 8/10 that would be the a balance between ease and quality of the fuck. If you 'like a challenge' move the target area up a point and drop it a point if you want it quick and regular with no real effort.
I would waste 55mins of the time getting the foid then I would transform back into my ugly self when I would be getting into her and she would call Police on me.
If you follow the guide as I outlined above you will have time to spare. To be safe it would be best not to go over 7/10 as higher attractive foids would be less compilable with your demands and they may want to hang around for more than the 1 hour of allotted time. 8/10 at a push I wouldn't go any higher than that. Try and edge toward a more quantity over quality approach here.