Nothing makes a garden look messy like a broken-down, old fence panel. But there are only so many times you can nail a fence panel back up. Here's how to get that fence replaced properly so it looks great and lasts for a long time.Step 1Use a crowbar or hammer to prise away the old panel. This can be a dangerous job so it's best if you get someone to help you. Step 2Dig out the old post, including the concrete at the bottom too. Ensure the hole is 45cm deep so your new post stays secure. …