BTIZ wrote:

Cloud flying is flying an aircraft within a cloud.. in the US, termed IFR,
or IMC (Instrument Flying Rules required, or Instrument Meteorological
Conditions). Not done in US with Gliders..

From what I've learnt in this group, cloud flying in gliders can
legally be done in the USA. It's just not popular, probably partly
because it requires a current motor IFR rating.

Stefan