The YMCA in Prescott is a great place to paddle. Indoor pool, heated year-round, and open on Thursday nights to anyone who likes to kayak.
It's a great way to try out different boats, bring your own, and meet excellent people who share a passion for paddling.
I have been learning how to roll, and after the first day of sinuses packed with chlorinated pool water, I decided that nose plugs weren't a bad idea. Soon, a dive mask replaced the nose plugs, and sillicone wax ear plugs completed the ensemble. You see, the human head just isn't designed to spend time submerged upside down. The mask was great; not only was my nose free of six gallons of poolwater, I didn't suffer from chlorine rainbow vision. My friend Cody Howard of Huckin' Huge recommended the earplugs, testifying that ten plus years of wet ears has left his equillibrium shot.

Here are some fun things I found out about rolling in a kayak:
•Like climbing, it's more about form, than strength.
•Even though it's about form, you will still be sore as hell.
•Sometimes you don't come back up again, so you have to go back upside-down, think about how you could have done things differently, then try again. Then again. And stay calm while upside down in the water while wearing a heavy boat that is between you and your next breath of air while your sinuses fill up like the Titanic.
•Don't panic. You will probably live.
•Rolling is really cool once you pull it off.