I agree with Orion that the key is to go on a weekday. If that's not an option, go early A.M.
I use the Wolfeboro town docks, and I never like it when a crowd gathers.
~ Some are just curious, and admire a job well done (when it goes well!

)
~ Others are pessimists that are watching, hoping for something bad to happen
~ Others think they know it all, and could do it better
As the years have passed and launching/hauling out aren't a big deal anymore, it's less of an issue, but I still prefer the quiet times.
My advice is to take your time. It's great to be courteous and mindful of others, but feeling rushed will only add stress and create opportunities for errors. Everyone waiting was a beginner at one time too.