What would be very useful is to for each gliding club to publish max winch launch heights that could be represented on the charts, which the gliding club would stick to, and the powered pilots stay out of (plus 500 feet, or something).. .. .<Thought>. .. .I am assuming that most gliding sites do not like thermalling in the overhead, so I would think that (in most cases) flying directly overhead (vertically clear of the launching) is probably as safe or safer than routing nearby.. .. .</Thought>. .. .SD