Re: Corsair 24 Mk II as a first boat?
I had MkI for some time.
Very lightweight boat. In my experience, it is great for sailing in calm seas with decent wind. The problem I encountered was that whenever wind was good - seas were quite un-calm, and when seas were calm - there was not enough wind.
Also, depending on your sailing style, there does not seem to be such thing as "relaxed sailing" in a trimaran. You must always remain alert and ready to let out the mainsheet least this thing pitch-pole or some such. Can't just "set it and forget it".
Certain maintenance items (in particular folding system) are a bit outside the usual scope of maintenance of a basic keelboat. If you are careful owner that likes things to work properly - it's a hassle. If you subscribe to "if it ain't broke don't fix it" - no issues.
For me it was a fun sailboat for a while, but I didn't like it long term and would not buy another similar tri again.