I find that its pretty hard to do because you can't use your hands and your arms to sense anything because they are covered by padding . Its also very hard to do fast and efficient centerline punches because the gloves get in the way .
Against any straight punches I wouldn't bother trying to deflect with Tan Sau , it won't work too well with gloves on , I think I just used to slap them out of the way with a Pak Sau and punch. Is it Wing Chun versus Wing Chun , or Wing Chun versus anything .
If its WC versus WC then it is going to be quite messy with 4 sets of fat gloves fighting for the centerline . If its other stuff then it might be easier because the centerline will be open , just don't expect to pull off any flashy techniques because 1. You have lost quite a bit of feeling in your arms because of the padding , remember out of contact we use the eyes , in contact we recieve information through our arms.
2. The size of the gloves make it awkward to do any of the sophisticated deflections . Try to punch on the centerline as best you can with the gloves on , be very aggressive and keep attacking his guard with Pak Sau and punch . Do not do a single punch , answer every move of his with a volley of about five punches , go through him like a laser beam. Don't look at his eyes look at the chest area on a line going from shoulder to shoulder but still be able to take in his whole body you will pick up movement a lot faster .
Keep the pressure on him with your chain punches and keep stepping into him , also watch out for any hooks to your head , but if you are aggressive with your centerline punching you will nullify any hooks , if one does manage to come around raise your arm with fingertips on the centerline with your elbow out , its called a Dai Sau its half way between a Tan Sau and a Bong Sau .
Make sure you reflect the position of his elbow , if his elbow is out in a very circular punch then your elbow must be out as well to be able to deflect it , if it less circular then you have your elbow in to match his elbow as you drive your Dai Sau up .
If he tries to punch you in the gut then just cut down on his arm with your same side arm. If he trys a spinning backfist move in with a Tan Sau to his striking arm and punch him in the side of the ribcage.
What ever you do be very aggressive and move in , everytime he punches you counter it with your own punch, even if he just flinches or tries to feint you treat it as a real strike and react with your own punch .
Oh and make sure you keep your guard up in front of your face , but you already knew that didn't you .
I would agree with Paulus and say that one of the main reasons of SLT is to train what you ask. One of the reasons for doing it realy slow with good structure and adduction is to strengthen your stance. The forms when show crrectly, I feel, are a very valuable and dynamic training method for a WChunner. Sure they are not everything you need for your martial training but you probably get the point. So I would say that doing the form is the only thing you need to strengthen your stance and probably the best way to do it.
