Although these teardrop & extended approach procedures are published in approach charts and occasionally flown in the simulator checks, in reallife they are never actually achieved. As pointed out, everywhere is just too busy, and equiped with radar anyway. What happens is that approach control will issue during descent a clearnace at some stage on the lines of "proceed to xxx VOR, then yyy, then beacon zzz and commence approach ILS 05R"- the logical route in following the most convenient approach bearing in mind outbound routings and terrain. It's usually not difficult to work out what's going to happen. Alternatively they just take you on radar control to the base leg, turn you toward the ILS and clear you for an ILS approach. I honestly can't ever remember flying these teardrop patterns more than a couple of times in a long career.