Contrary to popular belief, hot girls do not get "hit on" all the time (at least in my experience). That's a myth. Most guys don't have the confidence to approach them under the influence of alcohol, much less during the day sober. They might give some eye contact, or point them out to their buddies, but that's usually as far as it goes. I've been day gaming for quite some time now, and have never seen a guy cold approach. Literally, I can't think of one exception. The only approaching I see comes from drunk guys in a crowded bar setting.
The super hot girls are usually the most insecure because most guys have trepidations about approaching them. The reason the girls in the 6-8 range have the biggest egos is because they aren't as intimidating to guys and get approached a lot more often. For me, a 7 is usually more difficult to pull than a 9.
A girl's ego is not defined by how hot she is, it's based on how many guys she's aware of that want her.
Sneaking into a girl's social circle is usually something I try to avoid. It's a silly game I've seen play out many times. The hot ones will usually absorb the attention from their admirers in their immediate circle and then turn to an external guy from another circle to date. It's sort of a barometer to see what their "market worth" is. Women compartmentalize their social world. Their follower guy friends are in a different bracket from the guys they want to date. To the inexperienced, this line can be blurred and that's how they fall into the friend zone. They don't understand that a woman has the control in a situation where men are competing for her attention. That's why it's best not to "enter" her world. You will never be top dog in that environment. It's filled with male admiration, desperation, pedestal behavior, c0ckblocking, etc. The way you separate yourself from it is by not being apart of it. You subconsciously communicate that you are high value by sticking to your world and not concerning yourself with those antics. It's a major turn on to women and it evokes curiosity because your world is foreign to them. They already know everything about theirs. It's boring and predictable. As much as they like being in the spotlight, it's lonely to them because these aren't the guys they want.