The Tsend is the most advanced board that CWB makes. It is super loose until it gets on edge. When I let friends try it they have to learn to gently drop on edge and build that edge progressively. When you dump the board on to an edge as fast as you can, it will feel like it is sketchy. It's a very poppy, ollie pop board. Slow your edge way down, come into the wake controlled, and actually ollie the wake (at the base, push your back foot down, front foot up). It pops harder than anything out there.
Give it a few more sets and slow down your edge.