I rarely use the front end loader for anything but bucket work and loading round bales (I have a bolt in the bucket floor hay spear) but I also have a couple buckets that will interchange on both the tractors. One is a light duty material bucket, the other is a heavy duty excavation bucket with a double floor and reinforced cutting lip. That is the one I have the spear on. A light duty bucket with a spear lifting 1000 pound bales or a set of clamp on bucket forks will pretty quickly put a 'smile' in the bucket floor and render the bucket basically nit useable. I've repaired a few already and it's pretty involved because you have to cut the floor away from the sided of the bucket before straightening it as putting a 'smile' in the bucket floor, also pulls the bucket side sheets inward so the have to be cut away first and then reweled once the 'smile' is removed.
In extreme cases, the 'smile' will also crack the welds on the side sheets, depending on how acute the smile is.
When I popped the trees, I always used the drawbar and put a canvas tarp over the chain so if it let go, it wouldn't turn into a missile.