as I posted on a previous post like this awhile ago...
in the end, you protect yourself and others. if you have an accident and the sleds are unsecured, and cause damage to other people, property or vehicles, you will be held responsible for all damages that they produce. ei, fall out on the roadway, another auto hits them ect....
and if you think you have coverage for your trailer or it's contents just because it is hooked to your truck or other tow vehicle, wait till you try to turn that claim in. and if your load was not secured and you have insurance, they could deny coverage based soley on your negligence for not securing your load, causing more damage than what could have happend if the load was secured. not to mention what the police will be writing for tickets in the aftermath.
heaven forbid that the truck stops suddenly at the end of the accident (hits an immovable object), or stops fast when you hit the ditch, and you have 2 (or more) 600+ pound projectiles following the laws of enertia, heading at you and your occupants.... you could be in for a rude awakening.
i work in the auto collision insurance industry. been working in the collision industry (body shops, dealerships, insurance) for almost 25 years.... i see it EVERYDAY. i have great job security due to auto accidents because, THEY HAPPEN! dont say it cant or wont happen to you. there is a study that EVERY DRIVER will be involved in (at least) one major accident in their lifetime. if you havent had yours yet, it "could" be comming. why gamble?
it only takes a few minutes to bar the skis, and strap the rears down. i know some people think they are great drivers and they can avoid most accidents but.... that is why they are called accidents. THEY HAPPEN.... everyday.
personally, my sleds and bikes are tied front and rear everytime they leave the driveway. IF I EVER have an accident, and the trailer rolls over... i want to be able to open the trailer and see the units hanging from what will now be the ceiling. if they are damaged so be it but, i know i did everything in my power to avoid them being thrown around and creating more damage or harm to others including myself.
as said above... in the end, you protect yourself, and your investments. you are responsible for your actions.
ski