Hi Phoinix
yeah, was thinking about this (even the snow on top of the skid was not the real reason for "sinking")
Finally, I decided, not to remove snow or dig somehow for not to destabilise the tricky ground!
Seen retrospectively, I would move more slowly (but I had to consider the mast-moment limit, of course) !
Lesson learned: TAKE ADDITIONAL CARE - NEVER TRUST THE SNOW TOO MUCH!
Kindest regards,
old Gil.