Sail Trim: Minimizing rolling in sloppy seas
I could use some advice on sail trim, specifically, how should I set my rig for broad reaching in light-to-medium wind and sloppy seas? When seas are flat, my 38' full-keel sailboat sails nicely to about 150 degrees apparent. But when seas pick up it begins rolling, and I start sailing higher and higher trying to protect the rig from pounding as the rolling of the boat knocks the wind in and out of the sails.
How do you set your rig and course for such conditions: sloppy/choppy seas and light-to-medium winds? I'm a cruiser, not a racer obviously, so comfort and care of rig and sails is paramount to speed.