I would strongly urge at minimum you wear a lifejacket when docking, locking through, and in inclement weather. Also, just as a side note, any children under 12 years old on vessels less than 19’ long MUST be wearing a lifejacket per RCW 79A.60.160.
Lifejackets are a simple way to set a good example for other boaters, ensure the safety of yourself your crew and your guests, and live to sail another day.
PS. Here is a link to a discount of up to 25% off for the purchase of lifejackets at Big 5 Sporting Goods Stores in WA and ID through Sept 30, 2016: