Weird, I've been riding all over the SE quarter of NH, and it seems like about the normal amount of bikes. The Nashua River trail was too full of dogs, so I gave up on that about 6 weeks ago. Don't know if it calmed down.
I live in Nashua, the farthest north I've gotten this year is Loudon, and I've ridden to the seacoast several times this year. I tried some of the riding in circles thing, but I really get too bored by it.