This method uses a hidden menu item to customize the com_taxonomy tag results.
You can see it in action in:
http://digitaldisseny.com/en/component/taxonomy/prestashop
First of all you have to create a menu item of type "Category Blog". You will use this item to set the params for the com_taxonomy tag view as number of leading items, intro items, show page title, show category title, etc.
After that you have to replace:
$menuitemid = 115;
with the id of the menu item that you have created.
You have to save this file as:
templates/YOUR_TEMPLATE_NAME/html/com_taxonomy/tag/default.php
You can use any desired layout just replacing:
$this->_layout = 'blog';
with other view name like:
$this->_layout = 'default'