Thanks for asking this question.
There is now a solution in the combination with Gravity Forms.
The new add-on is called Gravity Forms Integration (see /product/gravity-forms-integration/).
It allows you to create a Gravity Forms form to present to the visitors. The add-on allows to map GF fields to SLP fields to create new locations as entered by the visitors. You could define whether the locations need to be checked first or whether they are shown directly.
Hope this helps.