Universal Eyes: double roll do not happen very often, we know this, right ... there are only 6 opponent's checkers and they are not going to block their home section to make more troubles for you being on the bar since they will take advantage of the third twist and escape from the board right away they will have a chance ... if you get double you most likely will send to the bar my most advanced checker, possibly sitting in mu home section ... isn't it not like in Ludo just standing in front of home section and waiting with fear not to be hit ?
I think you will find ways around these rules governing doubles the same way you found them in regular backgammon ...
thanks,
Andy.