How do I skid/move logs?

Went for a good walk around my property which is quite undulating tropical forest. I have quite a lot of black wattle to come out and want to know how I move logs without destroying tracks. I have a plate which I strap logs onto and pull them with the cruiser but it really is going to wreck the big girl with that much loading. I am looking at building a trailer with a low carriage to drag but surely there must be a better way? Any reference material out there or pointers. Thanks in advance