Yes, you probably don't need a whole tablet.
Take half, an hour before. If you've had a big meal, take it earlier - 2 hours is fine.
Swallow it with water. No chewing, shooting up, snorting, mixing it in yoghurt, sticking it between teeth, under tongue or any other silliness.
You get a slight head rush and an obvious stiffness (which is not at all unpleasant walking to a punt) and it easily covers the hour.
That's all there is to it.