I know that hockey is a huge sport on the seacoast, and I mean huge. The Ice Arena is in Dover, NH that gets used quite a bit. Also on the seacoast, there's Soccer and Lacrosse as well as Field Hockey that's pretty popular. The Seacoast United Soccer Arena always has cars in their parking lot, 7 days a week, you can check their site out to see what you think, it's seacoast united dot org:
www.seacoastunited.org
The NH Jr. Monarch's Youth Hockey Association people are looking for hockey coaches, right now according to their site. I think there season runs from August to the middle of March, if I'm not mistaken. It's all on their tri town ice area dot com site for the Jr. Monarchs, here it is again for you to review it, I'm sure you'll get other information as you get closer to your move. Check the Hampton Union newspaper online, it's seacoast online dot com.
I know that UNH is doing GREAT this year in hockey. I have family members that can NOT get enough of their hockey games, they're glued to the Whittemore Center over at the UNH campus! Check this site out, it'll definitely help you to understand how it is around here with hockey and all the other sports around here!
www.seacoastonline.com
Here's the Dover Arena site:
www.tri-townicearena.com/JrMonarchs
Good luck!