sounds like you are shooting a hunter class setup. 35 yard max, 12 inch max length on stabilizer, 4 inch vanes, screw in points, fixed pins.

according to the info you gave, you are shooting an arrow good for 108 pounds of draw weight, but the ibo max is 80 lbs. all you need is 5 grains of arrow weight for every pound of draw weight, you would be legal with a 370 grain arrow.

i hope you enjoy shooting the ibo and the 3d targets. it is very addictive, kinda like most sports.