Anyway to *completely* suppress subreport and whitespace?

I'm have a problem with the cf report builder for one of our more complicated
reports that have multiple optional subreports.

The object below each subreport is set to float relative to the object above
it, allowing it to start wherever the object over it ends. The problem is that
if the subreport is not shown then the floating object starts relative to
minimum size of the subreport specified in the report builder. The only way to
come close to what I want is to set subreports to a heigh of about .01 inch
which leaves them as a thin line in the report, or invisible if I set the
height to 0.

I'm looking at an evaluating version of CrystalReports and I am able to
accomplish what I want by adding multiple Detail bands which then can be
suppressed completely. I do not see a way to do this in cf report builder or
any other way to cleanly accomplish completely suppression of a subreport.

If someone has a solution I would love to hear it as the report builder does
everything else that we need. Thanks