I bought a bike trailer rated for three full dressers. Single axle with no springs with a steel skirt on the front to block road debris. 3 Steel wheel chocks in front. I removed the middle one and moved the two outboards closer to the front end exactly 60" apart on center. I tie the front down on the lower wishbones mostly to keep the front end snugged to the wheel chocks. Then another strap from the side of the rear through the rear wheel and wrapped around once to the other side. In all cases car is allowed to bounce due to the road and the frame is left alone. I might turn off the road about a mile after starting to tighten down everything.
Have never had a problem. I can drive right in and snug up against the wheel chocks. I highly recommend a line on the drivers side on the ramp and bed for the front tire to follow.
Do you by chance know the make and model of the chocks? I was concerned about hitting the front fenders with chocks..