Hi David,
It is possible to enable search override to the search results page with GET method: Return and Magnifier icon action and Search override documentation
You can define a custom URL as well in the redirection, if there is a wordpress search loop active, the plugin will override those results there – if that is what you are looking for. The search params are sent via the [code]p_asp_data[/code] query variable base64 encoded and serialized.
If you need the information from it, you will have to decode it like so:
[php]parse_str(base64_decode($_GET[‘p_asp_data’]), $args);[/php]
I hope this helps!