Prior to noon today I was driving South on I-5 between Burllington and Marysville and saw 4 boats heading North on I-5. Since they were all set up as serious fishing boats, I'm guessing they were heading to Anacortes to get ready for the derby.
Even though I'm not a fisherman, I'm with Tom on his thoughts about postponing an event such as this for the safety of the not-so-wise participant that will attempt anything at any cost. Obviously, if the need to rescue less prudent individuals arises, any "would be" rescuers would additionally be placed in a perilous situation.
If the weather does develop as predicted, perhaps the organizer already has a plan in effect to postpone the event.