Ok nevermind I have the answer. It hit me to just try the basic repeater :P. I'll post the answer here for others who search the answer.

You can use a BasicRepeater and give it the datasource as the results from SearchHelper.Search(sp)

var results = SearchHelper.Search(sp);
BasicRepeater br = new BasicRepeater();
br.DataSource = results;
br.ItemTemplate = CMSDataProperties.LoadTransformation(this, "CMS.Root.SmartSearchResults", false);