We took a 14' aluminum boat out at Sekiu last August. It worked just fine. Rollers are no problem as you just ride them and you don't even notice them. If the weather is good, and there is little to know wind (which happens quite often on summer mornings in the Strait) you would have no problem at Sekiu.

BTW: Bring a GPS if you hae one. That way you can go out in the fog. Foggy days in the Strait mean flat water.
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They say that the man that gets a Ph.D. is the smart one. But I think that the man that learns how to get paid to fish is the smarter one.