[striper50trout]

For tomatos I use 3/4 inch metal electrical conduit with two elbows to make a upside down U shape frame about six feet tall and five feet wide.
Cut two pieces of 1 inch conduit about 2 feet long and hammer them into the ground. The frame legs will slide right into them to hold it up.
Then I tie twine across the two vertical supports about six inches above the ground.
Then I tie twine from the top of the frame down to the twine at the bottom. I use one per plant so hang as many as you need.
As the tomatos grow just twist the plant around vertical pieces of twine.

I only grow heirlooms so may not work well for patio tomatos.
I hope that wasn't too confusing