We recommend loading our core technology (sfp.js) within the <head> of the page because that will give you the best shot at rendering a "visible" impression. The earlier our core technology loads to the page, the earlier an ad can be rendered.
If the "hard-coding" strategy isn't strategic to you, feel free to load the script dynamically (ex: via an ad server) as exemplified below:
<script type='text/javascript'>
(function() {
var sfp_js = document.createElement('script');
sfp_js.src = "//native.sharethrough.com/assets/sfp.js";
sfp_js.type = 'text/javascript';
sfp_js.charset = 'utf-8';
window.top.document.getElementsByTagName('body')[0].appendChild(sfp_js);
})();
</script>