So with your and Murtza help, it seems the correct tool should be: Visit Web Page. This makes more sense than a click, as its a page view (e.g. thankyou) that triggers the event - not a click i.e. registration. Noting that this is a virtual page view, needing the below code.
Yes, you could use a supplementary Visit Web Page call like this. I tend to use Click Link to trigger Interesting Moments because that way users can always trust that Visit Web Page signified a real page view, while Click Link becomes more loosely defined..