why do you want to get your kneedown stu?

proffessional racers do it because their bikes have more ground clearance and they use their knee to feel when they are at the limit of losing the front end.

on a road bike, you have so called 'hero blobs' on the bottom of the footpegs that tell you when you have leaned it far enough - they ground out before anything more expensive (like an exhaust can or fairing) does. if you put your knee out, you can make that hit the road first, but what's the point? you will be able to corner faster if you stay on it properly.

but it's a bit of fun, and makes you feel like a hero i suppose. just make sure that you are wearing sliders

to practice you want a constant radius corner that you can ride over and over again - a round roundabout with no traffic is ideal. when going around, crank your neck around to look at the centre of the roundabout and just go slightly faster each time you circulate. you'll soon crack it then.

but yes, i think that you are expecting too much too soon