The rotation of your front wheel is the secret - and, of course, your ability to sit still.

I ride in the country at moderate pace, usually try to get a mile of no hands in on most rides. I've ridden sitting bolt up right, leaning forward, with my hands on my back like a speed skater, with my hands on my head, with both hands on the top tube, I've even ridden NH standing up.

I ride a road bike with 73.5 degree seat tube and head tube, trail dimension is 40 mm. My record distance is 15.5 miles in the rolling roads of Wisconsin on the SAGBRAW ride two years ago. If your front fork is square to your frame and your back wheel tracks true to the front, it is no problem. Also, as mentioned earlier in this thread, having your headset properly adjusted is quite helpful. Just keep a moderate speed ( faster is more stable) and ignore the little bumps. To turn, bank your bike like a glider and you can make almost any turn. When somebody looks at you funny, just tell them 'I wish my mom could see me!' It always gets a laugh.

Are you planning on living forever? Just relax and let go.

Woo hoo!