Surveyor: Routing Directly to a New Survey (Rails)

I'm hoping someone can enlighten a noob as to the 'Rails Way' of redirecting to a specific survey using the Surveyor gem (1.4.0pre). I've created a separate 'Members' model to capture an email address on landing, and when Submit/Next is clicked, I'd like that email address persisted to the db and the desired survey shown.

MembersController:

def create
  @member = Member.new(member_params)
  if @member.save
    flash[:success] = "Thanks for taking part!"
    # This should redirect to the new survey.....
  else
    render 'new'
  end
end

I've read the gem documentation and it states a POST request to surveys/name-of-survey/ is required, but I understand redirect_to issues a GET request and calling a method of one controller (surveys) from within another controller (members) is bad news and not advised.

Any assistance on how to implement the desired behaviour would be greatly appreciated!

Thanks.