Is it possible to force url redirection?

Hello SharePoint Fam,

I am trying to keep users from using the default NewForm.aspx page for a specific list and want users to use http://domain/listname/NewForm.aspx?source=http://domain/thankyou.aspx.  Is there a way to force users to always use this url even if they navigate to the default NewForm.aspx page somehow?

Thanks N Advance