I have a milk crate on the back of my bike and fill it with stuff but for the life of me am not really certain how I get on the bike when it is loaded with stuff- I just do. I do admit to sometimes doing the over the h-bars method. I think I just do a good kick up and over but I'll check next time. The memory of how I do it seems stored in my body and not in my mind, I guess.
So funny that I seldom think about it.