If you are heads up or 3 handed, I think it makes sense to raise them the same amount you would any other playable hand. If that means you are slow playing, then so be it.

This is especially true for late in SnG's with high blinds. If stacks are like 4000 vs 2000 vs 4000 and blinds are at 200/400, I'll put in a standard min raise or 2x raise. This ensures that if you get a caller you'll probably be able to extract some, and if you get a re-raise you can confidently raise all in.