OK, OK - lots of questions...
Aurthur - in the 13'6" division, average caster in the group will win. Totals will be added, and the person with the middle score will take home the top prize.
Spaz - yes, there is an anchor rule: you need one. There aren't rules around anchor placement, etc.... but, there should be an anchor. (to your point, no overhead casting in this event.)
Salmo... c'mon.. you can make 9AM, we'll have coffee & some breakfast for ya.
This is going to be fun!