Well, sorry guys, my English is very bad.
If you just try to hit the openings, without thinking in the opposite sword, you are going to get a lot of double hits.
If the opponent is intelligent and try to bind your blade from the distance, you will be in trouble if you just try to hit an opening without controlling his sword, and you can only resort to bind.
The more experienced the fighter is, the more he will try to secure his survival, and you are going to die very soon if you just try to hit the openings.
You are going to die if you just execute strong strikes and you miss the hit, opening your body, so in the end, you try to control the opposite blade to make an opening secure and only then you enter into the distance with speed and strenth (not to much, always controlling, because you can miss). If you always enter with control, you can always react soon when you feel your strike or thrust is begining to miss the target, so you can maintain the Vor, not so if you are to strong or you mind always thinks this is goint to be the last strike.
Primary guards just turn into transition positions where you stay a moment for a particular situation, and you no longer think in guards, but in situations and angles.
Treatises just serves us to try understanding the foundations of the weapon, but in my modest opinion, trying to follow a treatise as if it were a Bible, make us to do our fencing more innacurate that trying to make our own conclussions through the practice, always based in treatises of course.
Not counting the majority of treatises try to teach us from a very simple and beginners perspective. I always try to teach my students very basic things like a lot of onset/Zufechten hits to the openings the first weeks, it is an easy way to explain some basic foundations and biomechanical parts of the system, but later we begin with the important part of the system, the bind, and the angles, windings, distances (for example, thrusts are a distance away from the cuts distance).
thrust, cut, half-sword, disarm, projection are the different distances (in this order) that we work on.
And never forgot the most important part: Your opponent is going to kill you if you leave any opening free, so you are not going give him any chance, and of course, your current strike is never your last strike, just another word that is part of your weapons phrase.
Competitions need to have severe penalties to the double hits, to be near any real fighting simulation. And, of course, be winner with just three or four points. The double hits must be dealt with the two fighters beaten and out of the competition (like in real fight). A clear hit without double hit must subtract at least two or three points from the opponent.
It is the tipical ruleset we use in Spain. Any other ruleset makes the fencing a sport, and the attitude and fighting style is perverted, seeking the double hit because double hit just cancel the opponents hit, or just subtract one point of both challengers. Even when I participate in a competition where the ruleset is unrealistic, I try to think my main objective is to survive, and I will never try to seek a bad technique that will lead me to the death, even if I kill my opponent at the same time. Probably I will not win doing this, because opponents will be like kamikazes trying to act like if their lifes were nothing, and soon or later a double hit will lead them to the death.
If you have trained binding and the distances and control over the opponents weapon rightly, it is more likely to happen your hands will be more secure if you control the opponent's blade, because as soon as you feel the opponent does leave the bind to enter distance you are able to change or contract the possition of your sword, or enter another distance at the same time the opponent does cut, but you will always receive the cut knowing and feeling where the opponents sword is, so you can follow and continue controlling his blade.
But, of course, you are always in danger to be hit, this is the nature of fencing.
To be able to hit the hands or forearms of the opponent, you need to be closer than Center of Proportion ("Centro de Proporción"), the distance in wich your opponent's blade must be controlled.
In a good fencing, if you jump two distances, in this case, from "out of distance" to "forearm cut", forgetting the things you have to do in Center of Proportion before entering the next distance, you are going to be opened, and your opponent will, very often, have control over you. Don't forget his sword is already aligned to you, and he just have to extend his sword to thrust, (thrust, the first distance after the Center of Proportion).
Ok, is it probable you can hit his forearms? Yes, it is. But, it is probable the opposite too, and the most probable thing is you are open and your opponent just has to extend the blade to hit you. As you can see, sometimes you have to choose the lesser evil, but you will always have a probability to fail.
Avoiding the forearm and hand hits is a matter of blade positioning, and the majority of time, right footwork and following the sword trajectory is all you need to control the opponent's blade once he has entered the distance.
Speaking about kamikazes: Kamikazes exist (at least most of them) just because fencers don't try to make aware if they get hit, they are going to die. You can take Poker as an example. If you play poker without money, you will see a lot of "All in" and every players will "call" every "raise" just because they have nothing to lose. The game change a lot if you are going to lose a lot of money (and we are not talking about losing your life).
By the way, it will always be more secure for your life to control the opponent than just try to hit the openings from the distance.
Here some videos of today's training against forearm and hand cuts:http://www.youtube.com/watch?v=P4wHGDN5uE8http://www.youtube.com/watch?v=26_DITuwaAk
Here some examples of a limited and simplified version of the longpoint, which in my understanding has so many versions/positions as Hangings and Windings:About the speaking window (Sprechfenster).
Doing the speaking window:stand straight, observe what he does.Strike in, when he twitches.About the one who draws himself away from you,truly I say this to you:no man can truly defend himself without danger! If you have understood this correctly,he can rarely come to blows.
It is called the “speaking window”: when he binds against the swordwith a strike or parry, hold strongly with the long edge against hissword with outstretched arms, with the point in front of his face, andstand calmly and observe what he tries to do against you.
If he strikes round with the sword in an Oberhau against you to yourother side, follow after and bind powerfully on his cut with the long edgefrom above in to the head.Or if he strikes round in a Zwerchau, fall with the upper slice againsthis arms.Or if he twitches the sword and thinks to stab you from below, followafter him in the bind, and thrust into him from above.
Or if he does not draw back from the sword, nor strikes round, workin the bind with the doubling and with other techniques — all becauseyou mark if he is soft or hard in the bind.
That which is called the “long point” (Langenort).
Before you come too close to him in Zufechten, set your left foot for-wards and hold the point towards him with outstretched arms towardsthe face or the chest.If he cuts at you from above and down towards your head, wind withthe sword against his cut and stab him in the face.
Or if he cuts from above or from below against your sword and tries toknock the point away, change through and stab him on the other sideinto the opening.
Or if he meets the sword powerfully with the cut, let your sword snapround. Thus you strike in against the head. If he rushes in towards you,grapple or slice him. Watch out so that it does not go wrong for you!