Went and looked some more Reb and found on the frequently asked questions page that it said you can use a CB in the entire archery season and only talks about needing a permit for a cocking device. So it sounds like he can use it for the 2007 season? not sure, he should call and ask like you said.

Here is the link to the frequently asked questions page...

http://gf.state.wy.us/support/faq/index.asp?faqid=2#7