I've been keepin my Yap shut, hoping for others to provide more input to your needs.
Since not, let me throw this out there under the flag of FWIW...
We all see spirituality different in some ways.
Over the years, I have moved dead center toward, "not about religion and rules and regulations, but a relationship with our Saviour, Jesus Christ!"
Having said that, what do you need?
It would seem that Archery should teach the core principles of archery, whether compound or stick, and teach respect for the life of the quarry, and how we learn form, consistency, follow through and repeating the right behaviors each time we draw the bow to build a solid set of skills....
It doesn't seem you would need much in the way of formal Christian format to be able to witness to those same tenets in your daily behavior as a Christian, and draw some parallels to the Word, and our call to "take captive our thoughts" and walk the narrow path to avoid temptation.
Archery and Christianity are both about discipline and practicing the right things ...right.
If indeed, Christianity is about "relationship" than teaching young people archery, while showing them Christian love, acceptance and relating the precepts of good archery to those same things in living a Christian life, seems pretty powerful right there.
Don't let formality block your giving heart. Let Christ shine through your love of archery and love of the youth!
FWIW...