I have a page which is used for searching through listings by submitting data using the supplied forms. The form parameters are submitted via ajax (post request), a new record i
You could try cleaning params by keeping only the things you need and deleting everything else before displaying the search results.
To use post I think you missed a second step, where you have to override the kaminari link partials : https://github.com/amatsuda/kaminari/wiki/Kaminari-recipes