There's no shame in watching your back cast. Here's a world champion at work:
Once you get the feel of a good back cast down pat you can more easily get away with not watching your back cast. I feel it becomes not only a 'feel' for the back cast but also a timing thing only engrained through repeated success.
If your fore and back cast are 180 degrees apart from each other as they should be, your target should be within your grasp.
Other hints not mentioned...
* Line speed. Generally you have to have that line moving quick enough to bend or load the rod to feel that load. As mentioned, it won't happen with a soft, dull or nonexistent stop.
* The more line you can carry effectively the more load you can get on the rod without relying on speed... you still have to stop the rod though!
* Short cast, short stroke. Long cast, longer stroke.
* Try uplining a line weight or two until you get the feel.
* Some rods make it real challenging to feel anything at all really. They are either rated way off of their optimum line weight or they are limp noodles or so full of resin or crappy lay-ups that they just don't transmit much feel at all.
Enjoy the voyage.