An annual "Boat-O-Rama" was held each summer at the Weirs.

The back of this card reads "A recent addition to recreational activities at Weirs Beach, NH is the annual Boatorama Water Show put on each summer. All types of water-going craft participate. Photo by Jack Edmondson." I believe those are Penn Yan Swifties in the foreground.
Here's a postcard showing the Weir's Ski club