I was driving it down off the back of my Dodge on two steel ramps and one ramp slid out from underneath and it hit the ground on the front right tire hard and rolled over onto its side. I was able to jump off as it was falling over. Needless to say, I took the ramps to the scrap yard and bought a trailer with a rear gate that doubles as a ramp.
I had a similar event happen.
You don't need to buy but one $600 set of busted hoods for a mower to decide a trailer to haul them on is a good investment.
However you load your mower make sure the ramp is secured so that it's safe EVEN if the truck or trailer moves forward for some reason.