Nice videos. The first one is a good example of a pike not ready.  What happened to me this year was I used a plastic lip gripper and clamped a 40 inchers lip before it was ready and it started thrashing as I lifted it up.

I'm gonna take some people's advice here and leave the grippers home.  I usually grab the lower jaw as you do but as others said, the hooks might get you pinned to the fish.  I think the best solution is to wear a glove for this.

Now to find a good glove.  Thanks for those videos, that was great.