Hub pages v/s Site Maps

If you have a lot of content on your site which Google is not including, it probably is not well connected with the rest of your site which is being crawled. Typically there are a few ways to fix it - a) connect that content to the rest of the site by links b) submit a site map to Google or c) Build hub pages. I think connecting the content may be the best thing to do but since it may involve human intervention (editing) it can be a bit slow. It should be something which should be pursued properly for fuure content and may not be a practical solution for legacy content on the site. b) Submitting a site map - though this is a recommended solution in many books, sites etc, it has never worked well for me. It seems and it would make sense that search engines may noy give enough importance to content submitted like this since typical visitors dont see it. The last option - a hub page may be worth trying. A hub page is a page which contains outbound links to other pages on the site and may have a few inbound pages coming in from the site as well. You could try putting all the site pages or the next level of missing pages in a hub page with titles/categories and include the hub page in the site's menus or headers or sidebar. I think this would provide search engines what they need to start reaching the dark ends of your site...