Abom79 got some good video of porositymaster (Clarke) at the recent Soule show (first week of November each year in Meridian Mississippi). Note: Soule is pronounced "Sue" as in lawsuit, and "Lay" as in Fritolay. I think it is a French word. Porositymaster uses the Ursutz-style burner, and is the only one I am aware of who successfully uses this burner type. See 7:18, and also a really neat flyover during the pour at 18:40. At 1080 resolution, this gives a really cool view of an iron pour.