One-on-Ones in Open Space

I just found these podcasts and I love them. Thanks! I am a first-line manager for software development team and I have 3 direct reports. The problem is that I do not even have a cube -- I sit with my team in a open space (to help us work together better?!). And our open space area is adjacent to another team's open space. It is impossible to have a conversation which is not public at my desk. In fact, any conversation I have is likely to DISTURB others in the area, no matter how much of a hushed tone of voice I use. So I am thinking about starting One-on-Ones with my team but instead of meeting at my desk we will go for a walk. But that will make it hard to reference and take notes. Does anybody have a suggestion for such a situation? Thanks, Steve