Surf/swim zones are no biggie, imho. The lifeguards don't even get to their posts until 9am so it's all a surf zone for 4.5 hours in the am and 3.5 hours in the pm. The river is fair game all day long. Most of the better brakes in NH are fair game all day with free parking nearby or along the street.
Windswell builds as i type. should be thigh/stomach+ Monday-Friday. Perfect temps mid 70's and partly cloudy/sunny.