Standard Operating Procedure is the most common in the non chicken world. There are no dumb questions. Standard of Perfection is an American Poultry Association designation.
http://www.amerpoultryassn.com/
Rolling and not flat can be a good thing for building coops and things. It makes for good drainage.
I've floated Spring River, Niangua, Gasconade, Big Piney, Meramec, Courtois Creek, Huzzah Creek, Bourbeuse, Big River, Roaring River, North Fork, Bryant Creek, St. Francis, Black, Eleven Point, Jacks Fork, Current and others that aren't normally floated like the Castor, Marble Creek, Capps Creek, Center Creek, Osage Fork of the Gasconade, Wachita Creek, Brewers Creek, Mineral Fork, Cuivre and in Arkansas, the Buffalo and White. Also ran the Missouri River 340 once from KCK to St. Charles.
That's all I can remember. There's quite a few more in the southwestern part of the state I haven't had a chance to get to yet.
Aside from the Current and Jacks Fork, my other favorites are the Eleven Point, North Fork and Buffalo. They're just beautiful and if you float during the week, you'll be by yourself. The Eleven Point doesn't really have gravel bars like the others for camping so the Forest Service has built float camps along the way where you can turn the canoe into a side creek and tie off with cleared campsites. The North Fork is just wide, clear, cold and fast. The Buffalo is in really pristine country. For more white water, the St. Francis, Marble Creek, Brewers Creek and the upper 1/3 of the Buffalo.
Once I floated the Current by myself from Tan Vat at Montauk to the Big Spring branch. That's about 90 miles. It was in November and I was the only canoe on the river the whole way.
If you don't have one already, I highly recommend this book.
http://www.amazon.com/Missouri-Ozark-waterways-detailed-Highlands/dp/1887247084