I've lived aboard full time for nearly 5 years now. For the first few years, I had to stay in one place for work and so paid for permanent moorings. I've since changed jobs primarily to enable me to work remotely and enable CC'ing. I've already gone as far North as Liverpool, East to Peterborough and South to Devizes all while working from the boat. If I have to travel to an office, I jump on the train.
I know it's easy for me to say but this is what I consider 'Continuous Cruising', ie bona fide cruising the system and moving around the country, not endlessly circling the same town. If you need to stay in one area then by definition you can't cruise continuously. Really, you need to decide whether the elements of your lifestyle that are keeping you in one place are more important than your desire to live on a boat without a home mooring. My previous job was tying me to one area, so I left it and found a different one.
I support most of what the NBTA do because they're one of the few organisations that genuinely recognise the value of having people living on the waterways. What I don't agree with is people who really need a permanent mooring abusing the system, but they are a very small minority compared to the 10,000s boats on the system.