I am surprised you have to run it at 540 rated RPM's, I usually run well below, but I don't have a grapple, so maybe that's the difference.
While I would have phrased it differently than creekbend, his points are in my opinion valid. I have been driving tractors longer than you have probably been alive and made every safety error demonstrated in your video and knocked down my share of trees, posts etc. and yes I have ridden my kids on my tractors. I learned from my mistakes or errors in judgement or whatever one chooses to call them and made myself a better, safer operator.
While you may well view these posts as rude and write us off as irascible old fa**s, we just want to make you aware of the dangers of operating a tractor in what is accepted as an unsafe manner/environment. If you have read on this forum for a while, you have seen many threads on children injured falling from tractors, recently a four year old boy died when he fell and was run over by his uncle.
As to being a novice, nothing wrong or ashamed about that, we all once were and many if not most of us are still learning. I am trying to learn to use a new piece of equipment right now and it sure ain't pretty trust me.
I hope you take all of this in the spirit it is intended as none of us like to play "Safety Police", but feel it is irresponsible to just ignore it; I hate conflict myself and hate the appearance of lecturing, so I wouldn't do it if I didn't feel it important.
I hope you choose to remain a TBN member and continue to learn rather than get pi**ed off and leave. I have been flamed on here too, but overall it is a good forum.