In Holderness the Squam channel maybe has something like a 1/4-mile of open water between Big and Little Squam, plus is a good excuse to stop at
www.waltersbasin.com for a meal on golden pond with a window table to picture looking down at Katherine Hepburn and Henry Fonda, below from 1981, as Henry's character, Norman Thayer gases up the old wood Chris-Craft.
Put-in and parking is free and easy at the Fish & Game twin boat launch ramps and dock about two hundred yards out behind the town library just up Route 113. Route 113 starts right there and is a heck of a scenic, olde-NH drive that rolls along for 40-miles, all the way to Conway, close to the Maine line. In Conway, there's 1316-acre Conway Lake which probably has an F&G kayak launch.
And, don't forget to pack some Cheez-it originals to toss those very hungry Canada gooses. Cheez-its get tossed like a Frisbee for 30-feet, float on the water, and Canada geese really enjoy a good Cheez-it original after tasting their first nibble. Like, what is this orange thing? .......yum! ....
.... plus you can always eat the Cheez-it you-self!