Just had a trainer work with Walka (he refused to load after an injury in the trailer 11 years ago!). He uses the work them hard around/near the trailer and letting them rest next to the trailer. Eventually getting inch by inch into the trailer. Using direct and drive method. Getting them to see the trailer as a nice place to be because nothing is asked of them. Outside the trailer, lots of active work!
Walka now loads into my two horse straight load (with ramp) and as of Saturday, into a 4 horse step up slant load.
Be the kind of woman that when your feet hit the floor each morning the devil says, "Oh crap, she's up!".