Hull Speed
Unless you have a planning hulled boat you can only go so fast. It doesn't matter if you are sailing or motoring, or both. So the best and fastest way to cross the Juan De Fuca Straits is to go when there is a 18-22 knot wind that will put you on a beam reach on a flooding tide. It is approximately 22 1/2 nautical miles from John Wayne to San Juan Channel. That should take you 3 hours, and 50 minutes at 6 knots (SOG). The flood should add 1-2 knots in some places, so knock say 20 minutes off of that.You can sail or motor, or both while crossing the straits (however, if you are motor sailing YOU ARE A MOTOR BOAT, AND MUST ACT LIKE ONE), but you also MUST know the rules regarding shipping traffic, which there is a lot of in all directions.