In that case you'll want more than the Marketo polling, which IIRC offers the completion activity but not a log of answers.
You might use the Marketo forms: you'll be able to create multiple pages with forms on them, but you won't be able to apply some of the advanced survey functionality such as branching logic.
Not a lot mentioned in Launchpoint but you might look at Kwanzoo: http://launchpoint.marketo.com/kwanzoo-inc/689-kwanzoo-for-nurture-programs