Please tell me more about your bow. Had you considered a non-compound bow like the Excalibur series from Canada? This would allow you to change strings on your own with no special toll but a bastard string. I can see the advantage to you bows design as it is so narrow. What is the draw weight of your bow? What range do you limit yourself to?
I have a 200 pound draw Excalibur that I have used to take several white tail deer with in my backyard in Charlotte, NC. The 200 pound draw bow will make a complete broadside pass through on any animal in the north American continent. I do limit my shots to30 yards, maybe 35 yards, do to string jump.