I know there must be a theatrical equipment and supply (how it's listed in the
yellow pages) shop nearer you than here in Dallas, but if not, call:
Norcostco, Inc. 214-630-4048
They handle most theatrical stuff, including muslin, scrims, drops, drapes.
They also could probably answer technical questions for you. None of the many
listings in the Dallas yellow pages had 800 numbers. Sorry.
Surely some FL universities have technical theatre programs who would be able
to help and advise.