Best advice on this thread is from Dirk.
I do this for a living and it has taken me more than 4 years of strugle to start earning more than I did when I had a proper job.The last three years have been rather goodfortunately and I'm starting to do quite well at the moment. but then I haven't been at home for more than 20 days this year. I guess if you've met Rogueta that might be seen as a bonus!
You be very careful about what salesman/consultant you talk to and how much money you commit to them.
Codprawn is right about the weather and alternative uses!
I'd look very carefully at the charter business that are out there and get a dunn and bradstreet on the ones which you think are sexy. See what kind of money is really in the game.
A lot of people are runing round hustling some other persons boat and any fool can be a hero on their own website so there is a lot odf smoke and mirrors in this game.
Genuine success stories from what I know of the commercial world would be Solent Rib Charters, Sabre powerboats and the Zapcat mob and Safety Boat services and there is a geezer in Loch Ness who is doing well and I think Seafriskye seems to have a good living. John Brooks is also doing well with his charter business so it might be worth talking to him.
I found the commercial world far more stable to make a living in than running a charter business in as they pay well and the work is long term (until you get run off

)
The biggest problem of running a charter business is equipment failure.
Stay lucky
Apologies to any people who I have ommited to applaud.