Zone4 has added the ability to copy registration elements between registrations in the Club Registration system.  This allows you to copy an existing custom element, from any of your registrations into any other registration.  You will see this option as the bottom item in the drop down list when choosing to add a new Element.  The first screen displays the list of available registrations and you must choose to display either the Cart or Individual elements.  This then displays a preview of all the custom elements on that page, and clicking the underlined link next to each element will load the element details for you to edit and add to the current registration.  This should help speed up building certain types of registrations and allow you to reuse custom element types from registration to registration.

The online help documentation has been updated, but the feature is pretty self explanatory.  See here for more details:
https://www.zone4.ca/support/Zone4.htm#Internet_Club_Services_Area/Club_Registration_System/Registration_Editing_Interface.htm  (at bottom).