How do I setup a naked domain in my DNS on GoDaddy using a CNAME (without using forwarding)?

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http://serverfault.com – I am trying to point www.irishcrunch.com and irishcrunch.com to irishcrunch-herokuapp.com but GoDaddy keeps on denying me when I try to use a CNAME. Heroku frowns upon using A records (https://devcenter.heroku.com/articles/custom-domains) so I'm not sure what the best way of approaching this is. I'm trying to solve this without using forwarding cause that's definitely a hack. (HowTos)