You have plenty of
anchorages with so much space that length doesn’t matter. I didn’t use
mooring balls myself in the
PNW, always dropped the hook or docked once in a while, but from what I saw I would think there are several
mooring fields with room for larger boats, but I don’t know whether it might be a strength issue rather than a space issue. I didn’t see many mooring balls in BC and AK. Maybe there were some close to a couple big towns in BC but out in the boonies there aren’t any, at least not where I went.
From a
docking perspective you should find berths in most
marinas, certainly for up to 50’ everywhere and even 60’ or more in most places. In the boonies what you find is usually a
single dock to which you go alongside and you just use whatever lenght of it that your
boat requires.
But again, except for nature reserves where the use of docks or mooring balls is mandatory, I believe
anchoring is the way to go.