I would suggest checking out Haida Gwaii tourism page on facebook https://www.facebook.com/pages/Haida...468748?fref=ts
there is also their website with maps and info Maps - Getting Here Around - Go Haida Gwaii
oh, I thought you had a boat.
Well I guess if they don't have something at their tourism centre,
likely can try going to one of the marina's and seeing if you could persuade a local.
most of the liveaboards I've noticed on this forum seem to be on the east coast most of the time.