Searchboxes are most effective when tailored to the content on the page. Full Searchboxes are ideal for home pages and non destination specific pages. All searchboxes can have the destination and departure preset, so if you're adding one to a destination landing page, be sure to preset it the same location.
Our 3 Tailored Searchboxes (at the bottom of the searchbox tool) are for location pages, as you can preset the destination, and only show fields for dates and who's going. This improves conversions as the searchboxes look to be specifically for that destination, and your visitors don't need to fill in where they want to go to again.
You can also embed deeplinks within your content to search dates rolling forward, i.e. 1 month ahead, as well as filtering by any combination of departure airport, destination country, region, or resort, star rating, board basis and budget.