I always try - although there aren't any numbers at most of the places I go.....
A good short field technique shouldn't have you at low speed on the "back of the drag curve" though. That's asking for trouble if there is turbulence, or a downdraft or windshear. It also gives you a lousy view of your touchdown point, and - in my opinion - is altogether a bad thing.
Bear in mind that the aeroplane will touchdown at the same speed every time, regardless of what speed you fly the approach. So make life easier, by flying your approach at the normal speed, with an aiming point an appropriate distance before the chosen touchdown point. This distance should take into account the ground you will cover between starting to flare and touching down. Judging the "appropriate distance" is the difficult part, but you can practice easily if you have a long enough runway.
Make your aiming point the numbers. Fix them in the same spot on the windshield during your final approach, which should be flown at precisely your chosen speed. Without getting into an elevators for speed control vs point and power argument, I personally find it easiest to use the elevators to keep my aiming point in the same place, and use (small) throttle adjustments to keep my speed constant.
When it's time (normally about 3 seconds before you would crash into your aiming point if you didn't move the controls!), start to flare. Where I fly, mostly on sloping runways, I keep a bit of power during the flare and cut the throttle when I want to touch down. When you touch down, note where you are in relation to the numbers. Go around and do it again, and again!
Once you are consistently landing in the same place, you should then be able to land anywhere you choose - be that on the numbers or next to an intersection - just by moving your aiming point. To touchdown on the numbers, you will be aiming somewhere short of the runway.
If for any reason you need to vary your approach speed, you "simply" need to change the distance between your aiming point and your chosen touchdown point.
You will also need to vary the distance between your aiming point and your touchdown point depending on the wind. In a strong headwind, the two points will be close together.
I'm not an instructor, and I realise that the above technique is not what is usually taught for short-field landings (which was the only point in my basic training where I was expected to land on the numbers), but it is safe, and works every time.