I camped at Helen on August 13th this year. There was an upright bear pole that looks like it originally had four fixed hooks up high on it, but now they are either broken off or so bent out of shape that only two were actually useable, and even so they were a bit squirrelly.
One of the fixed hooks was "hooky" enough that I could hang my drybag directly from it using the long-handled (and heavy!) metal pole that is stored on the ground next to the upright pole. This was do-able but difficult/awkward, especially since the hook on the long-handled pole seems to be less "hooked" than would be ideal.
The other hook didn't have quite enough hooked-ness left to it for that kind of direct hanging to work for the other folks that were camping at Helen that night. Plus, they had multiple bags to hang. In the end we solved the problem by making a 6" long rope "ring," clipping a small carabiner to it and then stringing a long rope through the carabiner like a pulley. The long-handled "lifting" pole was then used to hoist the little rope "ring" up onto the hook at the top of the upright pole and then they were able to tie their bags to the rope that was strung through the carabiner. It would have worked better to have a rigid loop (like a large carabiner) to go over the upright pole's fixed "hook", but no one at the campsite had a carabiner large enough for that.
I would suggest bringing a couple of large carabiners along with your rope instead of bothering with a heavy bear canister. (And then hope that the other party staying at Helen doesn't have several bags they want to hang...or just make sure you get there earlier than they do and so that you can set up your tent in the site that is farther from the food prep area!
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I had planned to contact the BC office to make sure they know about the problem with the hooks, but I forgot, so this is a good reminder for me. I'll speak to someone at their office tomorrow.