I take it the second vid is with the bypass cranked down a bit???
I have the same issue with the 105 and the ditch with the rearmount. I keep my pedals unlocked and apply a bit of brake steer. Of course I have gear transmission so I don't need 3 feet to brake steer and move at the same time....
Even with my big tractors I keep my pto right at 540 all the time when engaging snow. You want that impeller fan cooking in the housing (in case some wayward, hidden in the snow) object gets sucked in.....
I can pretty much tell how compacted the snow is or the moisture present by how much the turbo is screaming and/or the level of black smoke.....
The 105 especially gets up on the turbo and holds it's torque and PTO rpm. The 9000 gets on the turbo but I can bog her down if I get anxious. Amazing what 10 PTO ponies do.....
I remember blowing with my older Landpride on the 5030 HST and I engaged the cruise and unlocked the brake pedals and feathered them to stay straight.
The Landpride was about half the blower the Lucknow is.....
...and keep the blower attitude down and let it dig in. That should be easy as tilting the front bucket linkage and observing the bucket level rod. I purposely left my rod full length and paint marked it for various front QD mounted stuff. The bucket levels different than a bale spear or the forks..... Each is marked in a different paint color on the rod......
I thought those blowers came with skid shoes. I'll have to look in the catalog. My Lucknow came with no skid shoes, I welded on the bolsters and aadded Meyers style mushroom skids. I set mine about 1/2" above grade. keeps gravel out and preserves the driveway.