I see people have viewed this thread (25) but no responses. Maybe that kinda speaks for itself. Chi sau is supposed to be an alive, free flowing, spontaneous exchange between training partners and one shouldn't have a routine or techniques that they always do to score 'points' or 'hits' with their training partner.
However, I do have a basic training chi sau 'drill' that I teach to help students understand some of the concepts of chi sau. We call it jow sau jip sau. Basically, you and a partner start out with poon sau. Then, from a fook sau hand in the up position (your partner's hand is in bong sau), you perform a gum sau downward with that hand to both of your partners hands, you withdraw your other hand from underneath the partners trapped hands and punch down the center. The trapped student waits for your punch to come forward, and at the last second your partner performs a quan sau (simultaneous bong and tan sau), being sure to open with the bong sau (not the tan), to stop the punch from striking. Your punch should be moved off the line and held out by your partners tan sau. You then huen sau with the hand that attempted the punch around your partners tan, and their tan then reverts to a gum sau, and the drill starts over again, with your partner performing a gum sau to you to continue the drill from the beginning. This just goes back and forth, with each person performing gum sau, punch, quan sau, huen sau, then back to gum sau. It helps students to learn to flow, relax, shift, go forward, attack, recover, and stop when cut off. Along the way you check to make sure the hand positions of gum, bong, tan, fook, quan, punch, huen, and wu sau are all doing their job correctly.