custom search template

Yes, you can use get template function or includes_once, require_one to get the template.
The question here is how you identify the search result is come from the plugin. Since you not mentioned in your question, if you use default template, you can use : uformid to identify:

if($_GET['uformid']){
//include your template
}

or if you use ajax template then you can just use the uwpqsf_result_tempt hook to customize the result and include the template there.

Like I said, you didn’t tell what result type you are using.
If default result template, go for your theme’s search.php (probably, still depends on your theme structure)

If ajax, go for uwpqsf_result_tempt hook.