I used to hit a lot of action crossing the strait; I don't have pics of any of the really rough times because I was too busy piloting - the worst by far was day 3 of minimum 25kts and gusting to 35 or 40; we left about two hours before sunset and it was very, very difficult. I lost sight of a buoy leaving the Fraser...there was too much spray to track it and it disappeared long enough that when I spotted it again it was just off the port bow, maybe fifty feet away at most.
But here are a couple of pics of a 30' flybridge that followed us one time on a moderately rough day. He would bark the props at crests and almost disappear in troughs. Sorry about the quality; they're caps from a very rough video. It had calmed down a bit by this point; we were laughing about it on my boat. But I had talked to this guy at the gas dock in Steveston; he was pretty nervous about the whole thing. There was also a guy in a huge trawler who cut south for Active...when he hung that left and started taking it on the beam he was rolling like a fat pony on fresh grass. Right at the mouth had been really rough but here I think we're down to maybe sixes on average. They were pretty steep though...bad tide to be doing it but I used to be pretty ruthless about when I'd go.
After the crossing at sunset in 25kt+ wind, I said I would never try that again, even though we were bone dry inside. But it was just too dicey. A lot of waves were solid eights and we had to navigate by instrument for about half the strait between the dark, the spray, and the deep troughs.
Funnily enough, one of the first times I crossed, we were loaded really heavy and punched through a big wave at Sand Heads so hard it ripped the dinghy off the roof...probably a foot of green water up there. But by luck, it split on the dinghy and we didn't have much land in the cockpit...and the dinghy did drop straight into the cockpit, startling the living hell out of me, but otherwise everything was fine. Pretty steep, tightly packed waves to sweep a pilothouse like that, though.