A true counter-posture covers the line. This means the line is completely shut out when in a proper counter-posture.
You can find the sword without covering the exact line from the point to your body. The goal here isn’t to completely close the line but rather just to ensure the forte is in the line.
You have “found” the sword when your sword cannot be easily pushed away and your opponent’s sword can be.
You should be crossing in the fourth part of the sword, but with more of his sword into yours. I assume that means that his point is closer to your forte than your point is to his forte. This will always give you the advantage, assuming you are against the opponent’s weaker side.
The sword is always stronger on the side it points towards. This is better illustrated in SPADA 2.
Don’t let your point get too far from his sword. If your point is too far away he will push forward the third or even second part of his sword when you try to gain his fourth.
Even if your point is close to his, be wary of sudden mutations in your opponent when you are moving first. If he is able to form an angle with his sword, your opponent can perform a thrust that you cannot parry. If he leans away from your point, he can even pass into you long before your point goes online.
To avoid this carefully judge the range and move your sword cautiously. This way you can make a quick mutation if the need arises.
Responses to attacks while you are trying to find the sword
- On the inside, thrust so that your hilt is where your point was going to be. For this to work, I suspect you have to be using a mostly straight arm. If you are angled, you would have to raise your hilt which would in turn throw off your point.
- On the outside, drop the point under his and do the same thing. Again, if you are angled this won’t work so well.
Never touch your opponent’s sword with yours. This will give away your intentions. It will also disrupt your own form.
If your opponent touches your sword, or worse tries to bind, yield and strike his body. The hit will land at or just before he touches your sword.
Or just lower your sword. If he follows, raise and attack as he lowers to find you.
Too much angle, while strengthening the sword, makes it easier to be deceived. You need to find the balance between being too angled and too straight. I should favor straight, as historically I fight angled and am thus biased towards it.