Launching at Oak Harbor and going up Swinomish Channel is an option if the wind/tide matrix is ugly from Cornet Bay. That would put you 1/2hr-45min closer to Swinomish Channel, but...Oak Harbor is a shallow ramp and you need a moderately high tide to avoid wetting the tow vehicle too much. Friday has a minus tide at about 1PM so I would recommend launching at Oak Harbor NLT 10AM if you choose to go that way. C-Cakes will be watching weather closely and probably won't make a decision until late Thursday/early Friday.