ASP.Net MVC 3 Razor: Section Defined But Not Rendered Error

I have the following layout template:

<div id="columns" class="@View.LayoutClass">
    <div id="mainColWrap">
        <div id="mainCol">
            @RenderBody()
        </div>
    </div>
    @if (View.ShowLeftCol){
    <div id="leftCol">
        @RenderSection("LeftCol", required: false)
    </div>
    }
    @if (View.ShowRightCol){
    <div id="rightCol">
        @RenderSection("RightCol", required: false)
    </div>
    }
</div>

If View.ShowLeftCol or View.ShowRightCol are set to false, I get the following error:

The following sections have been defined but have not been rendered for the layout page "~/Views/Shared/_Layout.cshtml": "RightCol".

I am trying to have a single layout template instead of trying to dynamically select a template at runtime. Is there a way to ignore this error and continue rendering? Can anyone think of another way to implement that would allow me to dynamically show/hide columns with Razor?

Thanks!