There were two goals in each half from the hosts, with Kurtis Cumberbatch, Tom Beere, Kenny Aileru and Adam Coombes all on target.
The defeat leaves the Rocks 11 points adrift of safety with 17 games to play and needing a huge run of results to stay up.
See pictures from the match by Lyn Phillips, Trevor Staff and Tommy McMillan on this page and the ones linked, or just by scrolling down the single page if you’re on the Observer app. Get the Rocks latest in the Bognor Observer, out every Thursday.

29. Cray Valley PM v Rocks pictures by Tommy McMillan (5).jpg
Cray Valley PM v Rocks Photo: Adam Holt : Tommy McMillan

30. Cray Valley PM v Rocks pictures by Tommy McMillan (2).jpg
Cray Valley PM v Rocks Photo: Adam Holt : Tommy McMillan

31. Cray Valley PM v Rocks pictures by Tommy McMillan (3).jpg
Cray Valley PM v Rocks Photo: Adam Holt : Tommy McMillan
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