yep... contrary to what some people believe, the flatter you can keep the boat, the more efficiently it will move thru the water.
but any wind that is strong enough to push a monohull sailboat to a moderate speed will cause a little bit of heel no matter how you trim the sails, unless your running dead down wind....
those who believe that if the rail isnt in the water, the boat isnt moving fast enough are actually only stressing the boat to a very high degree and making more work for themselves... the allusion of speed comes from the excitement level of the need to react quickly in gusts... so in the cockpit things are indeed happening fast, whereas the poor boat is laboring under a skipper that doesnt know any better.... but a lot of us do it from time to time, sometimes accidentally, sometimes on purpose just for effect, so we can see how our lubberly crew reacts to it
and a cat or small dog overboard in rough weather will most likely be lost by the time you get the boat turned about... tethers or lifeline netting is a good thing... or both.