I like the Rogue boards also. I have an 11' Rogue tropical which is super easy to manage on flat water and busier water. Check out the roguesup.com website (check out the allwater boards). I'm 5'4 and have a tall SUV. It's lighter than my first board which was a 10'6" Doyle (super steady great board). And every single person that tries my board loves it.
Check out the Rogue Tesoro http://roguesup.com/tesoro.html. Wide and stable for yoga, flat water, or surfing! It is just what you are looking for 10'6" x 31" x 4.25" You will love it! I even use mine to paddle whitewater!