AbigailII: OK, here is the answer I: doubling cube is not something that I ( for example having rating 1680) am going to accept against the player with rating 2480 ... I just simply do not play with him/her if this option is specified ... but with playerhaving comparable rating I may be tempted to use it ... in case of tournaments opened for everybody, simply this option won't be available. But you may create with your 2480 a tournament restricting weaker players, and invite only these players who falls within the range of yours . And to make it more spicy, add doubling cube ...

As to question number II ... as far as I understand, two kings and two bishops is automatic draw, and ofering doubling cube is a nonsens. Of course there should be a necessity to review all the situations, but I am positive it can be worked out, and doubling cube can be used ...

Cheers, Andy.