Help with Backing Up

I thought I was pretty good at backing a trailer because I pulled many different types for many years but the longest enclosed trailer I have is 21FT and my new TT is 27FT with tung. Its 28 with spare tire. What I'm getting at is it a big difference from what I'm use to. I see you need to start getting the trailer turning allot sooner than I'm use to when backing. At first I was thinking a back up camera is something I don't need but I now see its one more thing to spend some money on. I must say I have had a great time doing it but everything adds up. I'm wondering ,,does it ever end or is it like any other hobby.