I have never flown a glider so would not comment on gliding but I have to say it was totally unknown to me that i may well meet a glider in IMC in the UK. I fly a fair amount of time in class G in IMC and always plan a route to get a LARS service for safety reasons. Now that I may encounter a glider in cloud (very rare I understand) which probably is not painting on radar, how do i plan my routes to be safets possible?