Kirk. The class I was going to use the broken bow is what I guess I could call basic flight up to 50 pounds. If the bow weight is say 49 pounds at 28 inch draw, you are allowed to use a 29 inch arrow. The arrows must be made from wood or bamboo with bird feathers or pergament. No plastic nocks. Point or no point is up to you. No weight requirement. The arrows I was going to use had a weight from 19-20 grams. 19 grams is 293 grains. A bit lighter would have been better, but the spine have to be considered also.
I have a back up bow made from two lams of Hickory that I am going to use in the up to 35 pound class, 51 inches ntn with 25 inch arrows with 245 grain weight.
There are other classes based on war arrows from medieval times and from Viking age. These have other requirements.