Datawatch model for inconsistent # of lines of report data

We occasionally get requests from our users to create a datawatch model that will extract data for reports where the report data does not have a fixed number of detail lines per section. As I understand it, this inconsistent report data format effectively eliminates the multiline trap as a viable solution. So my question - is there another way to address this report data format perhaps using appends and\or page footer templates? A little more description of the report format - some sections have two detail lines (HSA on line 1 and Total on line 2 for example) but in other sections there may be four detail lines (Dental on line 1, FSA on line 2, HSA on line 3, and Total on line 4 for example). Thanks in advance for any direction on this!