screen options hack code

settings.php

<?php

$screen = get_current_screen();
add_filter('manage_' . $screen->id . '_columns', 'my_true_false_option');
function my_true_false_option() {
  return array("my_true_false_option" => __("My True/False Option", 'translation-context'));
}
?>

<table id="fake_column">
  <tr><th scope="col" id="my_true_false_option" class="manage-column column-my_true_false_option" style=""></th></tr>
  <tr><td class="column-my_true_false_option"></td></tr>
</table>

<?php 
function my_true_false_option_value() {
        //return false if unchecked, true if checked
        $screen = get_current_screen();
        $hiddencols = get_hidden_columns($screen);
        foreach ($hiddencols as $col) {
            if ($col == 'my_true_false_option') { return false; }
        }
        return true;
    }