Hi scottnelle,
Thanks for the plugin, it saves lot of pain.
For : PHP Notice: Undefined index: HTTPS in
/home/domain/public_html/wp-content/plugins/simple-301-
redirects/wp-simple-301-redirects.php on line 143
Please update your line 143 with this:
$protocol = isset($_SERVER['HTTPS']) && $_SERVER['HTTPS'] == 'on' ? 'https' : 'http';
It removes the error ??