We're a fat cruiser as well. In a couple of recent races in a bout 10 kts, we were showing a little more boat speed than a Catalina 36-2 when on a reach, comparable down wind. But she out-pointed us enough to beat us across the line. We won on corrected time, though. We only had two more tacks than her. In last week-end's race, in lighter air, we had 8 more tacks than she did, so we weren't even close.
I definitely will try easing and adding belly to both sails. Thanks, all, for the advice.