I have a 13 mm core and get cold. I tried adding a 3.2 spring suit under it and it worked pretty good. I was definitely warmer. It is more bulky and you need to add about 5lbs. It was worth it to me. I'm going to be shopping for a dry suit later today.
I usually dive Monterey and water temp is typically 52.
I usually dive Monterey and water temp is typically 52.