So you are saying that the Feds can ticket you for not having a tag on a trailered sled? WRONG!
Say you find a great deal on a sled with a seized motor that has been listed on Craigslist. You go and check it out and yeah, it's a great deal. So you hand the guy the cash and load it up in the trailer. Now, it snowed yesterday and there is 3' of fresh snow up on the Pass and you have the itch to ride and your regular sled is loaded and ready to go, tags and all. You decide to call the buds and go riding. So everybody meets up and heads to the hill. It's a nice, cold bluebird day, you can't ask for more.
You arrive in the lot and start to unload your legal, running sled and warm it up. Meanwhile there is a Tree Trooper meandering through checking peeps for stickers. He lifts his Modular Helmet to look in your trailer and sees the sled you just bought and asks "Do you have registration on that sled?" "No", you reply, "I just bought it from a guy yesterday down in Dipschittville for a song. It has a seized up motor but I can get it running by next weekend and I'll get registration for it when the office opens on Monday."
"Well," he says, puffing his chest out so his badge glimmers in the sun. "I'm going to have to issue you a citation for not having in registered." Mind you, you bought it from Joe Detonation Saturday afternoon. He gives you a ticket anyways.
I'm sorry, but that is FCUKING WRONG! You cannot be cited for that, EVER!
I have dealt with the USFS for the last decade and have never even been asked about the sled on the trailer, just the one sitting on the snow being warmed up.
What you all have experienced is an overzealous cop who likes throwing his power around like a bouncy ball. Those tickets, charges or whatever you want to call them are TRUMPED UP. No court of law would accept that and he already knows that. What he is trying to do is get you to accept the ticket and pay it. Thinking that you will realize that it will be cheaper to pay rather than take the day off and spend the entire day in Federal Court just to argue and have it dismissed. That is how the majority of all cops that give tickets operate. The same thing goes for "Improper Mountain Driving" tickets, pay by mail and get your points reduced when you can go to court and have it dismissed. Those charges are just what the cop uses to issue a citation when no actual laws were broken but he needs to write a ticket so he pulls that out of his azz. Trust me, I know this because I have been told by numerous Deputys that is what State Patrol does.
Stand up to them and don't let them back you into a corner.
FYI, I purchase registration for all of my OHVs including sleds. I do not buy tags if the machine does not run or it is for sale. I also donate to SAWS and BRC