I have available 2 of the best snowmobile trailer tie-down/clamps made out there:

Superclamp II Tie Down System

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The following is a list of other features and helpful information about the New Superclamp II Tie Down System:

WORLDS FIRST highly engineered FIBER FILLED COMPOSITE tie down system
Light weight (approximately 5 lbs)
NEWLY DESIGNED gull wing structure
NEWLY DESIGNED pistol grip handle
NEWLY DESIGNEDlock key
NEWLY DESIGNEDribbed silicone rubber pads (protects your skis)
NEWLY DESIGNEDeasy to read center adjustment knob
Clearly stated instructions (for easy use)
Strong and durable (to withstand the elements, salt, snow, rain, road grime, temp.)
Quick and easy to install (virtually no modifications necessary)
Eliminates having to reach over your salt shield or under your sleds belly pan
NO MORE cranking screw downs (JUST ONE EASY PULL)
Everything is done from the side of your trailer or truck deck
Virtually fits and adjusts to all types of skis
Awesome for truck decks (Not having the hassles like the other tie downs systems give you)
Theft deterrent (when using a standard pad lock)
Screw style deck hook included (does not obstruct loading or unloading)
T- Style deck hook for channel style mount e.g. floe style trailer system (must be purchased separately)
Additional deck hooks in either style, sold separately

Suggested Retail Price: $179.95 CDN / $179.95 USD

http://www.superclamp.net/

I have 2 of these available....one is brand new unopened retail box, the other has only been used a few times.

$250 for the set including delivery within the continential US. (I WON'T SHIP OUTSIDE OF THE US)

which deck hooks come with them?

They are the hooks that screw into the standard snowmobile slides.

you mean they just screw in to the original hole where the stock hold down bars go? I'm so tempted!

SOLD