That's why I fitted speedbleeders to mine, instead of buying a mityvac.
Process is basically
squeeze lever
open bleed nipple slightly
When lever runs out of travel, close nipple
release lever
repeat until done, then swap sides. Using a piece of clear hose lets you see if there's any air bubbles coming out, and keeps the area clean of fluid.
Strangely enough, I've just bled mine with 5.1 this morning. Had a problem on a trackday with the reservoir hose kinking and not allowing the M/C to fill, so got progressively more lever travel until it was spotted. Hose is now braced...
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