Absolutely Henro. That’s something I’m very careful about and definitely always a concern when doing anything like this. I agree skid plates would be very beneficial. As I cut there’s many things I look at and decide whether to run over or hit with the chainsaw first, so I have been playing it all by ear to make hopefully the right decision each time it’s in use. Last winter (tractor was new) I was in the woods with the grapple and knocked the fuel filter off, so completely get what your saying, you definitely have to be careful. So far it has been phenomenal and really has done a great job.Just an additional thought. Have you looked under your tractor to see how many important things might be exposed, like hydraulic lines & filters?
You might want to be careful about what you are pushing down and running over. A lot of Kubota tractors would benefit from a skid pan for the kind of initial use you have described.