XF 2.0 Have custom page with search that goes through Xenforo

[PJK]

I have a homepage which is a basic bootstrap theme with a big search box, encouraging people to search the site. At the moment it uses Google Custom SE since that worked best. However, now that I have elasticsearch on XF 2, I want to replace that homepage search to go through Xenforo. How can I have that homepage search search via the Xenforo forum seach? In other words, how can I have the Xenforo search setup on a custom page not in Xenforo? Thanks.