That's easier than you think. Since I use to play. 5 iron! To be honest. When I use to follow ball golf. That topic came up as well...."If you could only use one club..." They also use to have "5" iron only tournaments or "7" and so on, and so on. They were a blast!
My ESP Torque 173, The seems to be overstable enough to hold a line in the wind. With some extra snap I can flip it over, and it will fade back to the left for max distance. I can throw it real straight and it will just fall easy to the left at the end of the throw.