Super Paper Mario Tips

Easy Way to Defeat Wracktail
The easiest way to defeat Wracktail is to first get on his head like you did with Fracktail. Switch to Luigi and use his Super Jump on his antenna thing and you should repeatedly bounce on his head to do a lot of damage. Once he starts flying away, try to jump off his tail and back onto his head again (it's easiest to do this using Peach). Repeat this to defeat Wracktail.