This article is from the Hanggliding and Paragliding FAQ, by Joao Geada with numerous contributions by others.
Re-rigging of glider required, some adjustment to launch technique
(due to loose support straps on a running launch), modification of the
landing flare by using the rear wires. These technique changes will be
easy for most pilots. The primary performance disadvantage will be the
limiting of the gliders top speed to about 40 to 45 mph (64 to 72
km/hr). This speed range has been sufficent for all normal flying but
will probably not do for all out competition racing.