I was thinking of backing mine too except I only have synthetic sinew, I'm not sure if that would work. This boat rope is pretty thick too, I've even been thinking of making my string out of the fake sinew too but again, not sure if it would work lol.
Does it shoot any faster/harder?
I just checked out the 'announcements' board too. For the most part I also live in BC (Vancouver). We're kind of like at the same level me and you, "noobs" lol.
edit: a while ago i made this rawhide string, i heard about cable backing and tomorrow I might tie it on my stick as an experiment, for the most part what im doing is just trying to copy photos that have been posted here lol