When I used to night fish all summer, I threw nothing but a 1/8 oz. weight on my worms. But I wasn't fishing in the super thick stuff. Light weights hang up easier in heavy cover. Plus, they may never get through all that stuff to the bottom. And yes, I'm sure you're missing bites by not getting all the way to the base of those salt cedars.
"Things turn out best for those who make the best of the way things turn out" - Zachary Troy Schrah - a young man with vision far beyond his years.