(1) Without a weapon, execute a standard karate elbow strike with the usual outward arc of approach.
(A) To perform the same strike with the sai, you may drive the point into your opponent's mid-section by holding it tightly under-neath your forearm,
or you may execute other variations like (B) an upward strike,
(C) a downward strike
and (D) a backward thrust.
So go hoime and practice that on your beanie-babies or whatever.