re: Paging bootlegger and other lawn experts

To take care of the weeds present in your pics you can spray Atrazine and the consumer grade Image (Iamazaquin is active ingredient). Check label closely as Image is now a brand and not just the product name. Tank mix at label directed rates and it'll clean it up nicely in a few weeks. You'll also get a few weeks of pre emergent activity out of the Atrazine but you will want to apply additional true pre emerge such as Barricade (Prodiamine) to extend that window. There is no torpedo grass present in your pics. The individual plants you pulled are St. Augustine. The other pics are common bermudagrass with a mix of weeds. Prickly Sida (Tea Weed), Purslane, Lespedeza, Thin or Bull Paspalum, and False Kyllinga is what I can make out in your photo. If St. Aug is your desired dominant grass then raise your mowing height to at least 3 inches. As for as a program to follow LSU Agcenter and Texas AM both have easy to follow guides as posted above. If this is an old lawn as it appears I'd recommend a fungicide on your St. Aug to help prevent severe brown patch that plagues the older varieties. Looks like there is already some activity on your plants you pulled.