The post saver tip is a good one. Don't use postcrete, it has the structural strength of wombat shit. Dry mix a 25kg bag of ballast with a heaped shovel of cement, one mix per hole. Whack it down hard around the post, about 2 shovels at a time, using a broom handle or similar, no water is needed as it will draw in ground moisture. A post level, available from Screwfix or most builders merchants for about £4 is helpful. Not all panels are created equal, so use an actual panel to position the next post.
The post saver tip is a good one. Don't use postcrete, it has the structural strength of wombat shit. Dry mix a 25kg bag of ballast with a heaped shovel of cement, one mix per hole. Whack it down hard around the post, about 2 shovels at a time, using a broom handle or similar, no water is needed as it will draw in ground moisture. A post level, available from Screwfix or most builders merchants for about £4 is helpful. Not all panels are created equal, so use an actual panel to position the next post.