groud prep

Hi,
I used to use a bededger (St Augustine grass/weed). spoke to a curber elsewhere in S Fla who said he just used a hard blade weed wacker to "shave" the grass down to the dirt and extruded on the stubble. Has anyone tried it that way? (NOTE: must be st augustine grass if you did)
thx
I used to use a bededger (St Augustine grass/weed). spoke to a curber elsewhere in S Fla who said he just used a hard blade weed wacker to "shave" the grass down to the dirt and extruded on the stubble. Has anyone tried it that way? (NOTE: must be st augustine grass if you did)
thx