Loading excavator into dump trailer. Tilt?

When loading my excavator into my dump trailer should I keep deck flat or tilt to angle of ramps? I have only loaded one time when I picked it up and at that time I tilted ramp and put Jack stands under rear to prevent rear tipping down.

I am getting ready to weld on rear jack supports, but if I will be loading at a tilt the legs will be welded at a slight angle vs if I load flat, so before I commit I’m hoping to hear recs of others.

Thanks all. Really appreciated.