There's actually two types of "public" land in Texas. There's public land that anyone can hunt on, with no permits other than your actual hunting license. Then there is public land as defined by TPWD. These require the type 2 permit, and a mandated amount of visable blaze orange clothing. I know that most lands that are controlled by the US Army Corps of Engineers (mostly acreage surrounding the lakes they have built) are the type where no special permit is required. These usually have a single regulation - no hunting within so many feet of improved recreation areas. There may not be any areas near Ft. Worth that are like this considering the fact that it's all incorporated. If you don't mind an hour or two drive, Pat Mayse Lake in Lamar County has both the TPWD controlled WMA's and regular public hunting land. The public land by far dwarfs the area occupied in WMA. Check with your local Game Warden, you might be surprised in what you find.