I started out in a Corribee too. This was in Plymouth, but I kept her on a cheap (but sheltered) mooring. She stayed there all year round, so there were no haulout / yard costs over the winter. She was bilge keeled, and I just dried out on a beach each spring to antifoul. This really did keep the annual costs pretty low. And they're great boats!
As far as I can tell, the cheapest moorings tend to be sailing club ones - I don't have personal experience of the Clyde area, but with the right club that is likely to be your cheapest option in the short term, and may be no more than £100-£200 per year. I don't think you're generally under any obligation to take much part in the life of the club just because you use one of their moorings, though that probably varies from club to club. The cheapest option in the long term, as Nick says above, is to lay your own mooring. This has a significant upfront cost, which may be a problem for you, but once down you've only Crown Estate fees each year which, if you're part of a mooring association, are very low (I think we pay just £40 per year). There's some useful contact information on the
WHAM website if you want to look into finding somewhere where you could lay a mooring.
Good luck, and don't let the apparent costs put you off too much - sailing really doesn't have to be a rich man's sport!
Cheers
Patrick
[Edit - Just reread your original post, and was struck by the comment "everywhere I check online seems to be very expensive". That's right, but its because the cheap options aren't online! You need to start asking around sailing clubs and making some phone calls - there are cheap options around, but one of the reasons they're cheap is because they're not well advertised!]
