A few weeks ago I spotted some skewers in the supermarket and decided (out of interest) to have a go with Cynthia's Skewer Method.
Absolutely Brilliant

I came back from a week in Portugal last Thursday evening, and had naturally watered the 'chids before going away. When I returned the pots felt light and I would probably have gone ahead and watered but........... on checking the skewers in the larger pots the tips were still damp, cold to the touch and smelled earthy, and still are on - the
11th day
The weather started to become more autumnal two or three weeks ago and the skewers have really highlighted how quickly the watering requirements also change. It becomes a necessary habit to water on a weekly basis (and more often for some types) during the summer months. I would probably normlly water every 10 days to two weeks in the winter, but not made the transition quite so quickly so the skewers have really proved their worth for the inbetween period, and I plan to leave them right where they are.