Kevin hates saying "Hi" to people

I always hate it when I walk through campus or T-wing and I encounter someone I know and must say "Hi". The act of saying "Hi" is not bad part, the motions I have to do leading up to it is the bad part. I must note that this only pertains to people I know and thus feel obligated (and want) to say Hi , but not well enough to actually stop and have a conversation. And i alos MUST stress that it's not the person I hate but the awkward series of motions I need to do just to say Hi.
Anyways, the awkward moment is if I see them walking towards me from really far away. At this point I am completely unsure as to what to do, they are too far to talk to, you can't tell if they are actually looking at you, and any kind of hand motion could be meant for someone else. To make matters worse, even if you COULD communicate with them, by the time you've said Hi and held the canned mini conversation (I'll talk about that later), they're STILL in front you of and you have a super awkward moment where you are actually walking past each other and theres nothing else to say.
In order to remedy this, although not necessarily efficiently, I employ what I call the "anywhere but at you" maneuver. By this I mean I will first notice the person from far away, I will gauge their walking speed and my own and their distance from me. I will then either look down, left , right, basically anywhere but in front. I will continue to do so until they're at an acceptable distance for me to look up, "notice" them, feign surprise, wave high and hold the usual conversation of
"Hi'
"Hi, how are you"
"good, you?"
"good good".
If the timing is perfect, the final "good good" will occur just as the person passes. Wow that's quite a lot of analysis for something so small. Oh well, atleast it beats staring at the person for a full 30 seconds before speaking to them.