There's 3 types of movement in TT's or 5'ers. Up and down, side to side and front and back. On our last TT we had two types. I installed some screw jacks near the axles and that took care of the up and down. I then installed some DIY JT Strong Arm knock offs and that took 90-95% of the rest out. It also depends on what type of ground your on. It's tougher to remove all the movement when on dirt or gravel. Black top or concrete is the best. The thing to do is after installing whatever you decide on for the up and down, go to the front or rear of the TT and push on the corner. If it moves then you also need some diagonal stiffeners like JT's. Bal chocks will definitely help with front to back movement.