Twice quarterly works. Can I just make a suggested alteration to the rules, then...
2. For batsmen/allrounders: score of:
a. 70-99 = 1-run gain on simming average
b. 100-149 = 2-run gain
c. 150+ = 3-run gain
d. <15 = 1-run loss
e. Not out = 1-run gain added to whatever of the above points are given/taken.