When setting up your content, did you know you have the ability to add Polygon selected listings to you your website? Whether it is a blog post or page you can set certain parameters and have your listings populate on any post or page.
Once you have selected the insert Displet RETS/IDX Listings
Select the map tab.
From there click the polygon shape in the example below. At that point you will be able to click an entire area for your users to search within.