I'll be in Cozumel that week, but have you tried posting it on ScubaBoard ( www.scubaboard.com ) under the Texas Swamp Divers section?

This would be considered an intermediate to advanced dive from what I hear correct ?

This saturday we will be diving the San Marcos river in case you are interested in joining.

More info can be found here http://www.divesanmarcos.com/trashurehunt.htm