hide post thumbnails but keep featured image on front page? (f8 static theme)

Hi!

I am using the f8 static theme and would like to personalize the layout. I would like to use a static image instead of the slideshow + NOT show thumbnails of the posts on the first page. I want the posts to be ‘hidden’ under separate pages or preferably all under one page.

I have installed the plugin RYO Category Visibility which works just fine. But I want to have a static image on the first page to kind of introduce myself before the user goes through my portfolio posts. One way of having a presentation image is to add a post, assign its own category and chose in the RYO Category Visibility plugin that it is going to be visible on the front page. But there will still be a thumbnail of the post underneath the large image. So I guess the question is: how can I hide thumbnails but still keep a featured image in the slideshow?

thankful for any help!!

cheers
Theresa