Student Pilot Distance from Gliderport Restrictions

Our club is interested in what rules or restrictions other clubs or
operations may place on post solo student pilots related to the
distance they may fly from the airport when solo.

For example, club rules forbid flying out of gliding range of the
airport, students are required to stay in a specified area defined by
roads, rivers and railroads,studends are allowed to use their
judgement, etc?

The intent is not a debate of the FAA requirements for XC flights more
than 25 miles from the airport.

Also, we would be interested in the requirements for licensed pilots
to fly "cross country" or "out of final glide range from the airport"
in club or rental gliders.

JE