Being 6' tall, (the truck is stock height save 33" tires) I find that anything akin to a step stool gets me up far enough that leaning over doesn't hurt so much. Even a 5 gallon bucket in a pinch. Only danger there is if whatever you are standing on itself isn't stable, since your weight isn't distributed very well. It does tend to want to kick out.
But in any case, anything that means leaning over the fenders or core supports, gets uncomfortable pretty quick without being up a bit higher.
But in any case, anything that means leaning over the fenders or core supports, gets uncomfortable pretty quick without being up a bit higher.

