I agree with mrahn. I truly do not know the laws on those, nor do I even play an attorney on TV. However, I have been checked by ODNR several times on 4-wheelers and also sled and they have never said a word to me or anyone in our group about not having helmets.

As far as the gaff goes, I use a treble and they have never said anything about that either, but maybe they just have never seen it or cared to check.

-Matt