Hi Guys,
polythene can rip, especially as it gets older, so weighting it down at points can be problematic … if not now, then some time in the future as it deteriorates and becomes brittle.
A trick in a very windy part of Scotland was to use old tile battens and weights as follows:
1. set the tile batten on the edge of the sheet .
2. Roll the tile batten up two complete turns in the sheet.
3. At intervals place weights (or pegs) to hold down the batten inside the sheet.
This stops any high winds tearing the sheet off the ground as the force holding it down is stread over a length a not a point.
However,
if you do not have high winds, dont bother. Its all in your local context!
The sheet in the picture would not last a few days North (& West) of the border….
BR
Neil