With the webbing running both ways on the pool cover, we achieve proper tensioning and it gives the cover a uniform appearance. Rectangular covers require a webbing spacing of 5' apart from one webbing re- inforcement to the next. Freeform pool covers require that the runs of webbing be placed at 3' intervals for proper support. The strapping is secured to the springs with our Heavy Duty Stainless Steel Buckles which lay out flat on the deck. The loose end of the springs is ten- sioned over the brass anchors to install the cover.
Many companies use a much thinner webbing and only place it on one side of the cover .
You can see the difference HERE .