Scott,
6061 would not be the best choice for bending. 7072 would be a better choice. However, there are some things that my allow you to bend 6061.
Here are a few varaiables to consider:
Are you planning on bending square/rectangle tubing or round? Round will bend eaiser, but you'll need to apply heat.
How heavy of wall tubing are you planning on using?
How extreme of an angle do you planning to bend?
Do you have access to a tourch?
As you can see, more questions than answers, but for sure things to consider....
Jeff