Hiding submit button without autosubmit breaks functionality

I don't want to use the submit button, but also don't want to use the autosubmit feature because it doesn't really work that well. The obvious workaround is just hiding the submit button with css. However, when using the autocomplete module, you have to click the submit button to get results, simply pressing enter or not clicking a keyword from the list, doesn't do anything. How can I fix this?

Thanks!