I'm pretty sure it's not haulage if you're moving your own stuff from one part of your ground to another. It's when you move something for someone else it becomes a problem. I'm thinking logs for my burner wouldn't be an issue but chip might be because I'm charging to remove it. Maybe I could invoice to say the job cost more than I quoted then purchase the chip from them (discounting down to the agreed price) for my own use?!
I've never been stopped to check my diesel etc in my life, but I'm sure if I got a mog and did it wrong I soon would!