That is still the most unnerving part. I have been having sex with my H for 20 years and it still is kinda weird. Is it gonna be to much to the left or to much to the right or to far back, to far forward, to hard, to dry, good grief, oh the worries.

But I must agree as a female the entrance is the best part. If your gf wants more aggression you don't have to take it out all the way. Once you get it at the angle she is looking for, only remove partially then when you go for it again you don't have to worry so much about the angle or what ever. Then you can be as aggressive as she or you likes.