can someone tell me what the unlimited class consist of at the upcoming Petaluma shoot

At Petaluma, you are allowed to shoot longbows with wood arrows, or recurves wih aluminum (or wood) arrows.  Anything else, e.g. recurves or longbows with carbon arrows, Olympic bows with all the gadgets, etc, is unlimited class.

thank you for the info.I normally shoot carbons from my longbow,but I dont think I will do well against those type of set ups.I will look for some woods.

Me too. I have been practicing with aluminums out of my recurve for the same reason. Stupid rule, but wonderful tournament and worth the trouble.