SNG Calling Requirements and Opponents Calling

In my typical pathetic show-me-some-love fashion.....any replys would be
appreciated.

This has to be one of the most frustrating and confusing parts of an SNG. You
work to get to the bubble, and then you are faced with a decision that could end
your run and give you nothing in return, sending you to the rail crying in
shame......or propel you to the greater ranks, giving you satisfaction that
makes you feel like you are an SNG expert. OK, maybe not that dramatic, but you
get the idea.

I've played approximately 1200 SNGS this year so far. And let me tell you
folks.......I still don't get it.

In the early stages of an SNG, things are pretty straightforward......avoid
conflicts without the nuts or close to and don't get too tricky. Steal at a
minimum until the the blinds start becoming a factor. Yadda Yadda Yadda.

Here's where it gets tricky......bubble time and large blinds. I want to post
some scenarios from last night, and I would love to hear any responses from
people who play a lot of SNG's.

As a sidenote, the basic strategy people are using is the push-fold when it
gets late. I am an advocate to a point. Sometimes, it's just nice to see a flop
with KJs or ATo....so making min-raises (baby cries) is something I will do on
occasion.

Let's consider that your opponents are average/above-average
players....nothing tricky, just basic players who have common knowledge of
pot-odds and such.

Scenarios where you would have to call.

1. Blinds at 200/400. You are BB with 3500 chips and in 2nd place out of 4.
Folded to the SB who raises to 1200. You have him outchipped by about 1200
chips. You have AJo. Short stack has 1000 chips and folded. What do you do?

2. Blinds at 300/600. You are the chip leader with 5000 chips and 4 people
left. You are in the SB. Its folded to the button (who has 2800 chips and is in
2nd place) who pushes and you have 88. BB is shortstacked with about 500 chips
after paying his BB. What do you do?

3. Blinds at 200/400. You are a short stack with about 1800 chips and 4
people left. You are on the button and the UTG chip leader pushes. You have AT
sooooted. What do you do?

Now how about some scenarios where it's folded to
you.

1. Blinds at 100/200/25. 5 people remaining. You are one off the button, are
barely in 2nd place with 3000 chips and you have JJ. The button is the chip
leader with 4000 chips, and the BB is the short stack with 1200. What do you do?

2. Blinds at 200/400. 4 people remaining. You and another player are
shortstacks with about 1600 chips apiece. You have QJs on the button and it's
folded to you. SB is chip leader by far(7000 chips) and the BB is in 2nd with
about 3000 chips. What do you do?

3. Blinds at 300/600 with 4 people remaining. You are the chip leader with
5500 chips. The SB and BB both have about 3000 chips. It's folded to you on the
button and you have K9 soooooted. What do you do?

4. Blinds at 200/400 with 4 people remaining. You are 2nd in chips with 3000
chips and it's folded to you in the SB. You have AA. The BB is a shortstack with
1400 chips after paying the blinds. What do you do? (This is probably the most
confusing for me)

WWYD?