Lutz jump
During her competitive career, Thomson was known as a particularly strong spinner. Her spins included an unusual back layback, performed on the opposite foot than a normal layback spin. Kay in fact had 3 or 4 unique versions of the layback, performed by no other competitor, and often included each one in her long programs, as well as a unique crossfoot version of the scratch spin. Thomson was also one of the first female skaters to regularly include the triple Lutz jump in her programs, and the first ever to complete a triple lutz-double toe combination in a short program.