I can now confidently install my son's seat, but it has a simple belt path and I have auto locking seatbelts so that makes it easier than having to use a gated buckle to lock the belt. I have a very reputable fitter who will check seats for free and he gave me the thumbs up. But any new seats I will take to him and have him install it first and show me how it's done. Then if I install it myself I will take it for him to check so I'm confident I have it correct. I think everybody that uses a car seat in their car should learn how to install it correctly because you never know when you'll need to do it. So while I agree that people should have a seat installed professionally if they are unsure, they should find a fitter that will show them how to do it themselves and how to use the seat correctly.