Yes agreed and if you want to do a quick check to see if you have covered the basics then use (in your Designer) Tools-->Send to UI Cloud or F6 - it takes a minute or so and then you can see in your default browser what your basic design will look like on different size devices.
You will find that a mix of anchors and designer script is usually the best way to go, but that really does depend on how complicated your layout is. In a lot of cases you can just get away with using the anchors...
Little problem... screenscrollview in panel. I have anchored then screenscrollview to the panel (top-bottom-lleft-right) but the scroll stops at the end and is not complete.