Yes, you could. But why bother? In my experience of mainly trying to avoid hooking chums, I have never found them difficult to catch. Mostly they tend to get in the way while I'm targeting another species.

To the original poster: take Vedder's advice. My one small hardly scientific experiment occurred when I ran into a co-worker on the Satsop one day many years ago. He wanted to catch a chum salmon, I said I didn't but agreed to show him what I thought would work. As we walked along the trail to the river I spotted a piece of chartruese yarn on the ground. I leaned over, picked it up and tied it on a hook when we arrived at the river bank. I told him that chum like to hold in water, "like that over there." I cast and immediately hooked a chum, then another, then another until I was confident that my co-worker understood what to do. I left him happily hooking chums as I went in search of silver.

Sg