http://ibo001.businesscatalyst.com/2...BO%20RULES.pdf
This is the most comprehensive rule set that I found, that actually has the different classes.
MBR is Bowhunter Release:
4
. Bowhunter Release
(MBR
)
A compound, recurve, or longbow shot with no restriction on stabilizers or style of release. A sight
shall have fixed
-
pin, cross
-
hair, or circle style pins without a lens or magnification. If circle style
pins are used, all circles must be the same size.
Sights may not be adjusted after entering the
shooting course. Note rule change III.C.6 concerning peep sights. MBR archers will shoot from the green stake.
CFP is Compound Fixed Pin and is the same class with a different name from what I could find.
One thing I did note is that with this rule book, men can go to 80lb draw weight. In the link from the Alberta Archery site it says maximum of 60lb. I'm not sure what rule set most of the shoots use. I'm set at roughly 63lbs depending on the scale that's used.