-In point sparring, use the lead leg rather than the rear leg. Power is not really an issue in point sparring as it is more of a game of tag. The lead leg will allow you to strike more quickly.
-A lead leg front kick is to point sparring TKD like what a jab can be for a boxer. Use your lead leg to put something between you and your opponent, prevent him from coming directly at you, gauge distance, feel him out, etc. You can also score with it if your opponent gets careless.
-Foot work. It is different from Olympic sparring footwork. Make sure you can keep you distance and close the distance without being touched. Make sure you can move at angles very well.
-Keep your hands up! They don't need to hurt you or "make you move" to score a point. They simply need to hit your hogu.
-Use your punches and strikes. They WILL be counted and no body likes losing the match point from a quick lead hand back fist.
As for specific strategies.....
The Flying Whirlwind:
This person is very fast, flexible, agile, and can jump very well. They usually have long legs and suberb control of their kicks. They will use jump spin kicks and spin kicks to score their points. The techniques themselves allow them to briefly remove their target areas to be scored on (by spinning), while still allowing them to deliver an attack. The speed and range at which these kicks can be thrown can make it really difficult for a person to close the distance. Some top competitors can execute 720 degree hook kicks or repeatedly do spin kicks, causing their opponent to commit to a block or movement before being hit with an unexpected kick. If you don't know how to move, you will get creamed.
"Signature" Techniques: 360(+ !!) degree Jump Spin Hook kick, Spin Hook Kicks, Lead Leg Side kicks to keep distance.
The Human Whip:
Like The Flying Whirlwind, the person probably has a long reach with their legs, good flexibility, and good control over their kicks. This person relys on lead leg combination kicks to force an opponent to commit to a block or evasion before hitting them with the second (or third!) kick. Remember that power is not needed to score a point, simply a "tag". This can make sparring a person employing this strategy very hard to spar.
"Signature" Techniques: Lead Leg Hook Kick/Round Kick combination, Lead Leg Front Kick/Round Kick Combo, Double Side or Round Kicks.
The Bull:
This person likes to simply charge in and get in there. Usually this is a strategy employed by color belts, but black belt ranks, myself included, have refined this strategy into something else which I will get into later. This way of sparring is very simply. Quickly charge in, weather the incoming blows attempting to stop you, and let loose with a barrage of punches, kicks, etc. Don't stop until the judges seperate you and don't let your opponent get a chance to act offensively.
"Signature" Techniques: Jabs, Crosses, Hooks, Front or Round Kicks with either front or back leg.
The Defender:
This person will let you come to them instead of coming after you. A person is most vunerable when they commit to an attack. The Defender will feel you out, wait for you to make your move, and exploit where you are weak. Again, they don't need to knock you over, the simply need to tag the opening. Unless you are very fast or are good at limiting your openings when attacking, don't be surprized when all of a sudden the center judge calls "Break!" before you even completed your follow-up strike.
"Signature" Techniques: Lead Leg Front or Side Kick to keep distance. Lead Hand Back Fist.
The Shark:
My personal method of sparring, and a refinement over The Bull, and borrows from The Defender. This person will circle you and always move. If you attack, they will circle away. If you try in slowly work your way closer, they will use lead leg kicks and other techniques to re-establish distance. Like The Defender, they wait for the opening and like The Bull they will rush in and unleash a barrage of attacks non-stop until the judges seperate you and your opponent. What is different in this method of sparring is that while you are waiting for an opening like the defender, you are not really counter-attacking a specfic technique. When your opponent commits to an attack, or you put him in a bad position due to your superior foot work, you will charge in like The Bull and attack. This will limit your opponent's ability to attack back because of the angle, take him by surprize, force him to be defensive, and give you the opportunity to just go crazy with strikes.
"Signature" Techniques: Jab, Cross, Hook, Back Leg Front and Round Kicks, Spin Hook Kick (for me personally) to keep distance
I am over generalizing sparring, but this gives one the basic idea of sparring methods used from my 12 years of ATA TKD point sparring. Sorry to be long winded, but I hope this information helps some one!