I being real 'through and through' handler of a knife stab techniques.
It's good like to have a medium sized knife which is compact and closable, to keep it conveniently in pocket, to extract it quickly, to stab by it and handle it fast.
The exactly correct performance of a knife stab technique are of decisive importance. A knife must to be kept in hand firmly. A close distance have to be achieved. A knife stabs have to be unexpected, fast, strong, repeatable.
To make a fault, and try to use a knife in any way at all which is to be presented by default in battle, and try to make a stab from long or medium distance, to be extreme mistake. The specific conditions in battle have to be made, to use a knife stab. The hand have to keep knife by a handle firmly. The close distance range have to be achieved, to do stab with utmost strength and quickness.
Knife Stab Spectacular Technique.
Exist Spectacular Technique, which is despite being spectacular and looking cool, actually being less advisable than other Knife Stab Technique. Knife Stab Spectacular Technique is consist of making a one hit slaughter, to do a swing strike by right hand with knife, hitting piercing a head of an enemy. Such technique possible to use, but success of it being less certain, it's require precision, and it's just being less advisable by me for use, than other Knife Stab Technique. Thus, I strongly advice to use Knife Stab Master Technique for certain success, to keep enemy for later and not to slaughter enemy by one strike stab to a head, to unleash a lot of strikes stabs to non-vital area of a body, to make enemy suffer, and to make a decision about enemy later, either you wish to slaughter enemy, to make additional attack to an enemy and to make an enemy invalid, or just to leave it by to a chance.
Knife Stab Gentleman Technique.
If you fancy yourself being a gentleman, and yet being clever enough to know a need to keep a knife too, you may fight by hand to hand combat initially, and to use a knife unexpectedly in chaotic wrestles, if you to be about to lose. I myself dislike wrestle and I being bad at it due to me being lesser than middleweight and due to lean body structure. Besides, street fight wrestle overall being chaotic too even among similar weight opponents. Thus, it's really convenient and handy and fit, in wrestle to extract from pocket knife, use close distance which is present in wrestle, and stab enemy numerous times, once enemy to be extremely vulnerable and totally helpless about such onslaught.
Knife Stab Master Technique.
It's the most certain Knife Stab Technique. Have to be made a specific positioning of own body, an advance move to close distance to do knife stab with utmost strength and quickness, and certain trajectory of aimless swings stabs at specific approximate level of area.
A hand have to keep knife firmly.
Stabs have to be unexpected, fast, strong, repeatable, at close distance, without any precise aim, and aim at about stomach area of an enemy, since thus it's almost only way to use short range ability attack of knife, and it's allow to use lengthy knife swings conveniently to bring into it a lot of strength, quickness, repeats.
Left leg have to make a move first to advance, to unleash onslaught of stabs in stomach area. A one step move, jump alike fast move, by left leg advancing, to close distance to enemy, immediately after which right leg advance too together with right hand and stab to an enemy, to make onslaught of stabs with utmost strength, quickness and a lot of repeats.