Instead of finding out towards the end of installation that a hole is too deep, too shallow, or a post is out of line, always double check your work as you go. The more watery the cement mixture, the more harder it will be to keep the fence level while it is curing. For best results, pre-mix the cement in a wheelbarrow instead of pouring in powder and water separately into the hole in the ground. Use as little water as possible in mixing cement. This method is more slow-going at first, but will require less repair time later. Instead, install the first post by digging the hole and cementing the post, and use the upright post to begin measuring for the location of the second post.
Contrary to popular fence installation manuals, digging holes, cementing the posts, then finding out that the spacing is off when trying to install the framework is a costly no-no.
