Using a Mighty-vac you pull the fluid through at the wheel cylinder fitting, NOT the master cylinder. That's the suction method.
A pressure bleeder (see here:http://www.falcotools.com/html/euro_kit.html
) pushes fluid through the master cylinder and you drain it at wheel cylinder fitting.
You are going to get under the car either way. No "Topsider" system that I've ever heard of. You can use a turkey baster to "freshen" the fluid, but that isn't bleeding.