Hi, Can anyone suggest a good method for extending concrete fence posts from 5' to 6' so that I can add trellis? The posts and panels are all in really good condition, so not keen to rip out and re-post, but I would like to increase the height to increase privacy. I have found these guys: https://picclick.co.uk/Concrete-Post-Extender-Complete-Cover-Leave-your-post-172383605937.html but wondering if there are any alternatives I could consider. Thanks in advance for any advice! Mark.