How can I create a PowerShell function to wrap multiple nested script blocks?

I'm working on a simple function to indent my log files. The premise is extremely basic:

Set-LogIndent will add an indent to all following log commands

Set-LogOutdent will remove an indent to all following log commands

Now, of course one way of doing this is to just have

Log-Message "Before we indent"
Set-LogIndent
Log-Message "Hello World" 
Set-LogOutdent
Log-Message "After we indent"

The log / console output would then be:

Before we indent
 - Hello World
After we indent

The problem with this is twofold:

1. The Code blocks can be quite big so you lose track of where the Indent/Outdent commands are

2. When you are nesting them you often can't tell which Outdent command refers to which Indent

..

So my solution for this was to create a "wrapper" function, much like a Using statement

function Use-LogIndent {
    param (
        $ScriptBlock
    )

    Set-LogIndent
    & $ScriptBlock
    Set-LogOutdent
}

You could then use the code as follows:

Use-LogIndent {
   Log-Message "Hello World" 
}

This works GREAT .. until .. I nest them

Use-LogIndent {
  Log-Message "Hello World"

  Use-LogIndent {
     Log-Message "Saying Hello World again!"
  }
}

In this final one, I find the entire Script Block is either spat out into the console as text - or the $ScriptBlock parameter is $null

Am I not following the correct pattern here? Is there an easier / better way of doing this?