The one area that you need to be watching is the keel to hull joint on the 31-2. Yankee Marina in Maine, and a few others, have done many re-builds on these boats. The stringer & keel root system is rather lightly built and when one hits bottom, even at low speeds, they don't usually fair all that well. Yankee did the same boat twice and the second time they completely re-engineered the stringer / keel root system the second time.
They also tend to have small cockpits compared to other boats in this size category and a very shallow bilge. The teak toe rails on these boats, 31-2, 33-2, can also tend to leak and this goes directly into deck core. Most deck moisture is found along the outer toe rail area on these boats so check for that.
They are good boats, with a decent turn of speed, but I agree with Tim R. that the 33-2 is significantly more spacious and the space is used better. Just inspect the keel/hull area very, very closely.
