Drag increases with the square of the
airspeed; so increasing your airspeed
from 55 to 75 increases drag by 86%.

With full brakes you can point reasonably
modern gliders at the threshold and come
down at a constant airspeed. Once you
level off the airspeed comes off rapidly
with full brake. Ground effect and weight
come into play, but even in a G103A it
doesn't take that much more runway than
a 2-22. Note that I stick to sideslipping in
the 2-22.

It can be hard on the guy in the back seat
hoping that the guy in the front seat will
round out before smacking the nose.

And if you round out too high and close
the brakes, you will be getting up close
and personal with the fence at the other
end.