Scotty
I, like many others who use this board, did my first stoppie by accident while practicing hard braking. I am actually very suprised more people don't do stoppies. On most sport bikes the rear wheel will come off the gound before the front wheel locks up if you carefully apply brake presure. I had a Katana 750, which my wife now rides, and I could at will lift the rear wheel 2-3 feet off the ground. On one occasion I had the rear wheel about two and a half feet high when I locked up the front wheel. There was no problem or crash. I simply let off the brake a little and the front wheel regained traction and the rear wheel gently settled back on the road. On another occasion I was traveling at about 115 mph on the Katana when a dog ran out into the road ahead of me. I started slowing as quickly as I could. I felt the rear wheel come off the ground and I looked at the speedometer. I was doing 90 mph. Since I was not going to be able to get stopped before I reached the dog, I let the rear wheel back down so I could steer. Had I not practiced stoppies I would have either wrecked or at least not been able to shed as much speed.
When I got my Hayabusa in January, one of the first things I tried to do were stoppies. I found it was more difficult to do a stoppie on the busa rather than on the Katana. Both have basically the same dry weight and the same wheel base, but the busa's 42 psi and lower center of gravity make it more difficult to lift the rear wheel. I am 6'1" and 245# and for me it takes a warm road and a warm front tire to be able to reliably lift the rear wheel. I also lowered the tire pressure in both wheels (35f,34r). This appears to allow them to warm up faster. Also there is more contact patch with the road which helps.
As for suggestions on learning how to do stoppies: start at 25-30mph, apply the brake smooth and quick, in the beginning brake to a complete stop, and most importantly listen to the front wheel. You can hear how much traction your tire is getting. The tire will make a slight whistle before it locks up, unless of course you just mash the brake handle in which case it will just lock up. If the front wheel locks up, and it will from time to time if you practice stoppies, immediately release the brake. I have seen people panic on motorcycles when they lock the front wheel and not let go of the brake. I have never seen anyone keep a motorcycle upright with the front wheel sliding to a stop. Once you get comfortable with doing stoppies to a stop, start doing them at 45-35mph. This gives you enough speed to lift the rear wheel nicely and still roll out of it.
I have no problems with stoppies. On the other hand, I find wheelies very difficult. I have only done a few in first gear by turning the throttle quickly. When the front wheel comes off the ground, the handle bars go limp and I fight to keep them straight. Then I release the throttle and it's over. I can't get over that limp feeling in the handle bars.