Wrapping a wrap panel

Is there any way to wrap a wrap panel? What I have is a page with two wrap panels placed inside a split grid. One wrap panel on top and on the other on the bottom. The top panel is dynamically filled. What I would like to have happen is once the top wrap panel is full that the bottom panel starts to populate with data.

Is there any easy way of doing this? I can’t seem to find any way of telling when a wrap panel is full :confused:

Thanks in advance