backing it in is actually quite easy (on a real motard, not sure about a street bike). Grab the front brake, pull the clutch in, click down two gears, lean the bike and let the clutch out (quick but not dump it). You can then control the slide by modulating the clutch. Some people tap the rear while letting the clutch out to help slow the rear wheel down, but it is not necessary. You never lock the rear up though, that is lame