I'm a little confused about your post?
HB 292 only mentions boats from another state or countries having the Milfoil Decal, not NH registered boats.
Those boats without the decal are already subject to fines under that bill, but again, it's NOT for boats registered in NH.
You can read the House Bill here:
http://openstates.org/nh/bills/2013/...s/NHD00003629/