Re: sailing with CB up?
Avenger, I have a similar boat, 5.5m Mirage. CB (or swing keel) is very easy to operate on boats that size, but make sure the lifting cable is solid and that it is attached securely to the swing keel. I always keep the keel down unless I'm going down wind. It makes a huge difference when going upwind.
Be kind, for everyone you meet is fighting a hard battle.