Redland Football Club members are at their wits ends after a $30,000 white picket fence, erected last year, was vandalised for the sixth time on Friday, December 19.
The club, which uses the ground, bought and built the fence, which surrounds the football field next to the Sharks Sporting Club.
Police stepped up patrols in the area and at the skate park opposite the ground in Colburn Avenue, during the September school holidays.
Additional security patrols have been put in place along with guard dogs to prevent further damage.
Redland Football Club chairman Colin Tobiasen said the latest act of vandalism, also during school holidays, came at a great cost to the club.
He said it was now time to expose the culprits.