That enabled them to survive and fruit, but it wasn't entirely satisfactory. My own conclusion was, I will never do "hanging" tomatoes again. They dry out too fast, plus are subject to stem breakage as they sway or torque in the wind.
IMHO, though, shading does help tomatoes in very hot dry weather.
Same here...I like to experiment every year, but when something doesn't work that well; I don't waste any further time on it.