A co-worker is a hardcore snowmobile nut. And I mean NUT. He's trying to talk me into buying a sled... I was thinking it culd be a great way to get into remote locations for winter railfanning. What think you about that? Anyone tried railfanning from a sled? Any other unconventional vehicles you've used to go railfanning? Watercraft, hovercraft, aircraft--anything? Pics from those adventures?