If it were me I'd probably just roll with it, given that it adds no cost or additional hassles. I'm often sailing with a crew of complete non-sailors - if you're in that situation an additional competent hand the first time off the dock could be helpful.
Again, I'd probably just flow with it, and hope to learn something new from the local captain. <img src="http://www.traveltalkonline.com/forums/images/graemlins/Cheers.gif" alt="" />