I used a bender and two connections to make a rectangle out of conduit, that I lashed hog-fencing to (hog fence has 4" X 6" spacing on wires). Fruit much heavier than tomato, will need a net bag to nest in. Onion bags will work. With the bag tied onto fencing.
Those panels I lashed onto poles. Two 10 foot conduit makes a roughly 3 foot by 7 foot rectangle, and can weight 75 pounds when fully loaded. Just sticking conduit into soil, is not adequate to your need.
