How to force full width content in Genesis Custom Post Type Single Page

// Add support for Genesis layouts to listings post type
add_post_type_support( 'your_post_type', 'genesis-layouts' );

// Force layout on custom post type
add_filter('genesis_site_layout', 'your_post_type_layout');
function your_post_type_layout($opt) {
    if ( 'your_post_type' == get_post_type() )
    $opt = 'full-width-content';
    return $opt;
}