Yes I've done both 3600s and 3602s. They are a bit of a pain to write, as there is a lot of stuff on them, but they are a lot easier to do now that they have redesigned the additional pages.
Just do page 1 as a title page and then the rest as a standard report.
John
>Has anyone done the Report forms for the bulk mail USPS forms?
>
>e.g 3602-R1