Sad situation.

I absolutely refuse to use lock on stands.
I used one just one time in my life long ago on a friend's property and that one experience was enough for me. I hated it. It felt very unsafe, especially the climbing up and down process. And I felt naked and exposed while sitting there too. Like I good just fall out at any moment if I wasn't 100% vigilant of every second.

My friend fell on the way up to one the next week and spent the next ten years of his life paralyzed from the chest down.

He always said lockons were better because they were quieter then double platform tree climbers and you could hide them better way up in the crotch of a tree.
And just use spikes to climb up on.

No thanks.

Prayers for this family.
It won't be a happy new year for them.