If you're using a water bath, I wrap a piece of foil around the bottom outside of the pan to help prevent leaks. Then lightly spray the inside of the pan with nonstick spray. If you want to take an extra step to prevent leaks, nestle the pan into a roasting bag when you set it into the roasting pan for the water bath. I also have one more work-around – if you have a regular 10-inch cake pan, place the springform pan into the 10-inch pan and place the whole thing into your roasting pan. This will still allow the water bath to do its job, but will avoid any possible leaks!