Just so you're aware: TS should always be the only application running on the box. Sharing the TS with other apps is not recommended nor a sound idea.
There really isn't, that is if someone found a "hack solution" but later runs into issue Tableau Support team would consider it "unsupported at that point"
Port redirection and logging
After the server has been configured for SSL, it accepts requests to the non-SSL port (default is port 80) and automatically redirects to the SSL port 443.
Note: Tableau Server supports only port 443 as the secure port. It cannot run on a computer where another application is using port 443.