Wally,
Seriously, I have found that 30 degrees is "THE" sweet spot for RumRunner  in 
perfect wind conditions. Take a look at 30 degrees. It really isn't all that  
much. Jumping up to 45 will bury the rail and of course reduce speed. Three 
on  the rail, 10 to 15 mph winds, 30 degree heel and I'm flying. I've been able 
to  play around the past year or so with the gps and I can tell which is the 
fastest  configuration. Sailing flat going downwind is preferable, but the R22 
hull will  never get up and plane. It might ride the crest of a wave and give 
you the  feeling of planing, but it will never plane. It simply doesn't have 
a planing  hull. Sailboats have displacement hulls, as we all know.
 
Rummy