[Tex/LaTex] How to add vertical space struts after hline

Question

I know the table trick of adding "struts" in the first line after and the last line before a \hline. I use it throughout my document, and it looks good that way.

However, now I am working within a longtable / supertabular environment. If a page break is reached, these environments add a running head, which in my case ends with a \hline.

Now I've got a problem. While the longtable / supertabular environment knows where a page break happens, and adds the new header, I don't know that. I cannot add the "above" strut at the appropriate place.

The only option that I see is adding a "below" strut to the head's \hline. But I don't know how to do that…?!?

Answer 1

 \hline
 \noalign{\vskip 3in}    

puts some space after the line.