The Welded Plate option is flat and perpendicular to the post. Therefore, if you have a sloped area, you have 2 choices: 1) you could shim the plate with some type of stainless steel plate or washers, or 2) don’t use the plate and core drill the posts.
Facia Mount
There are many ways to install a post.
The most important thing to remember is that the post holds up your fence/gate barrier and, therefore, needs to be strong and straight.
