What are the "old rules" and "old scoring system"?

San Shou

 

Ah, I've always been rather interested in San Shou, i might ask to pick your brain in future if i get some specific questions together.

 

Another point on the catch leg run forward is after 2 steps either fighter must use a hit that way they can step again,so its catch hit on or before 2 steps and step again wash and repeat if poss

 

Older rules used to allow a fighter to grab ropes with the hand now its a foul

 

Older rules allowed a hip throw and leg reap now no hip throw allowed but the leg reap can be used on inside but not outside of opponents leg

 

While it is slightly off the point you were making, has their actually been a significant change in scoring processes that affected the tactics of the sport, or would references to old scoring systems be a reference to traditional Thai scoring compared with more European methods?