smacky- It's hard to say, since most of the Catalina's around here are basically floating condos that are rarely seen not tied to a dock. If you want to increase your odds of safely getting your rail wet, I would recommend 2 things. 1) stay in the slip. 2) Attach you spare halyard to the finger pier on the far side of your slip.
With the sails up, put a couple turns of that halyard on a winch and crank it until you reach the desired angle of heel. Get out your camera and fire away! (Remember to look like you're having to really hold on tight.)
If you want to have a LOT of fun, try pulling down a furled jib alone on a windy day when the boat is up on jackstands. It adds a whole new dynamic to heeling. Don't ask me how I know. (Ruined a good pair of pants)...