I have seen people buy a $10,000.00 machine and strap it to their trailer with $14.99 for four rachet straps. Once a machine comes off a trailer at highway speed all that is left is scrap metal. No recoverable parts.
My solution: Eyebolt at front of trailer. Stop machine, let out winch hook and hook to eyebolt. Move to back of machine and use the "seatbelt style" retracting straps that are bolted to the trailer frame, (available at Sportsman's Warehouse for $34.99), and place those two straps on and tighten. DONE. Total time to load and secure 4 wheeler when doing it by myself is less than 3 minutes. That's right, LESS THAN THREE MINUTES.
And I am confident that my machine is secure for the ride. But, I always stop and check staps every 20 or 30 miles. Be Safe, Not Sorry.