Defence of BB in Limit Tournaments

[CorvusMonedula]

I wonder if anyone can offer some good advice regarding this. Blind defence in tournaments is clearly critically important, but I am having some difficulty in deciding just when and where to do so particularly in limit tournies.

If we stipulate the following;
1. One middle position raiser and no other callers.
2. We don't know much about the raiser (as is often the case in tournies as opposed to cash games), but we assume he has a decent hand such as A2, A3s, 4 high cards, AA, 4 wheel cards.

What would you defend with either early in the tourny when the stacks are deep in relation to the blinds and later when a call is a much larger proportion of your stack (more than 10%).

Obviously you're going to defend with any hand you would normally play anyway, what I'm really interested in is how far you'll let your standards slip under these conditions.