OK, the forecast shows green arrows, and you're ready to go...what do you need to remember? let's see:
Board? Check!
Sail? Check!
Mast? Check!
Extension? Check!
Fin? Check!
Boom? Check!
Wetsuit? Check!
Towel? Check!
Wet Willy? Hey! Wait a minute! Where's Wet Willy? Damn, I knew we forgot something! We can't go sailing without Wet Willy! Let's go pick the dude up!!

...I'm not subtle, but I am persistent!