I have a shovel/rake rack mounted to the ceiling of my trailer. It keeps everything much more organzied and it holds weight well. I have a couple rakes, shovels and a couple Kombie attachments in it.
I have it mounted far enough back, that the tools would hit my door, before they fell out. I haven't had any issue with anything coming out of it, and I drive reasonably, but with a sense of urgency. I have items going in from the front and rear of the rack.
I can post pictures later if it would help your cause.