Line Lock

How can I lock my elbows in a line out?

When ever I lift, I can never get a full extension and he doesn’t go as high as possible. I lift from the back of the jumper.
What can I do to lift him higher? Any techniques?

lift as the jumper is going up. If you try to get him higher as he is coming down from his initial jump you have to lift a lot more weight, so timing is key.

GTO with a line lock