Riding Razors at night during Hunting season

I have a hot topic that has been an issue at my camp that I need help on.
During this past deer season we had members that would go out from about 9?0pm till about 1?0am riding their Razors all over the property. The riders say that it doesn't bother the deer while other members say that it does. I believe this is the first year they have starting ridding at night and this was also the least amount of deer seen or killed on the property. Only 8 deer were taken this season on 1800 acres. Can anyone help with this argument? Who is right? Should night ridding be not allowed during hunting season?