Submit a different page each day. Avoid online auto-submitters unless you are sure they really work. Though some do, many more don't, or are simply ignored by the search engines. To be safe, submit to the major engines by hand. Make a minor change to the page before each submission, so that the search engine spider will see it as new.
Most search engines place more importance on new pages.
In addition, updating the page helps prevent the engine from thinking you are spamming it, by submitting an identical page multiple times. Since search engine algorithms change often, you are better not re-submitting at all, but following tip 14 below. Modify, or 'tweak' copies of your listed pages to improve ranking. Make some substantial changes to the body text. Submit the copy.