If you are stuck on Prince Rupert I've heard good things about Terry's Charters, I'm not 100% sure he does just day charters though...if open to northern Van Island, give me a shout. Is it only halibut you are interested in or other bottom feeders and salmon too?? Check out Terry's website
www.terryscharters.com, and feel free to check out ours as well,
www.serengetifishingcharters.com.
Pics speak for themselves. Also, what time of the year are you thinking? All these kinds of things make a difference as to where to go and who to go with. Just give me a PM if you'd like anymore help, whether heading to Rupert or up our way. Cheers